ORDER GRANTING MÍOTION FOR CONDITIONAL CERTIFICATION, DENYING MOTION TO DISMISS, AND GRANTING MOTION TO STRIKE

This is a Fair Labor Standards Act (FLSA) case. Plaintiffs allege that Defendant Ghilotti Bros., Inc. (“Ghilotti”), a construction company, failed to provide proper meal and rest periods, failed to provide accurate wage statements, and did not pay overtime and minimum wages owed on account of uncompensated work it required its employees to perform. Plaintiffs focus on Ghilotti’s practice of not paying its “driving laborers” for time spent at the beginning and the end of their shifts loading and unloading Ghilotti trucks and driving between Ghilotti loading areas and job sites. According to Plaintiffs, those uncompensated tasks usually took between and 2 and 3 hours each day.

Three motions are pending: (1) Plaintiffs’ motion for conditional collective action certification, (2) Ghilotti’s motion to dismiss, and (3) Plaintiffs’ motion to strike Ghilotti’s affirmative defenses. The Court finds these matters suitable for disposition •without oral argument, see Civil Local Rule T — 1(b), and VACATES the hearings set for April 26, 2013.

I. BACKGROUND

Plaintiffs Jose Ramirez, Luis Gomez, Marck Mena Ortega, and the (“at least 100 more” potential 1 ) opt-in Plaintiffs are present and former Ghilotti laborers whose work included loading and unloading trucks and the transportation of necessary construction equipment to and from job sites before and after their shifts. See Sec. Am. Compl. ¶ 41 (“Loading and Transport Subclass 2 ”).

According to declarations and documents Plaintiffs submitted in connection with this motion, Ghilotti requires that materials and equipment be transported between its job sites and its loading areas at the beginning and end of work days. To that end, Ghilotti maintains a list of laborers with driver’s licenses who may drive Ghilotti company trucks. Ortega Decl. (dkt. 33-2) ¶ 3. 3 Ghilotti laborers call the Ghilotti dispatch center the afternoon or evening before a potential work day, and a prerecorded message tells them (1) if they are working, and, if so, (2) at which site, (3) when they have to arrive at the site, (4) whether they must drive a company truck, and, if so, (5) which truck and (6) which equipment must be transported on that truck. Id. ¶ 6.

A laborer assigned to drive a company truck must determine himself what time to show up at the Ghilotti loading area, which *1202 involves working backwards from the shift start time specified by dispatch and estimating loading and driving time from the loading area. Id. Once at the loading area — often a company yard in San Rafael — the laborer must inspect the truck, fill it with oil and gas, collect and load the dispatch-specified materials into it, and then drive to the job site. Id. ¶ 7. That process usually takes between l and 1.5 hours. Id.

At the end of the shift at the work site, the driving laborer must collect the materials he transported to the job site and load them back on to the company truck (sometimes with the assistance of non-driving laborers), and then drive the truck back to the Ghilotti loading area and unload the materials. The post-shift loading and transportation process usually takes between 1 and 1.5 hours. Id. ¶ 9.

According to Plaintiffs, Ghilotti does not pay driving laborers for any of those pre- and post-shift loading and transport duties. Id. ¶ 11. Rather, their pay stubs reflect only the hours spent working at the job site “during [their] official shift[s].” Id. Plaintiffs also say that their experiences of not being paid for driving and loading time did not vary by supervisor. Id. ¶ 12.

In 2007, Ghilotti briefly decided to provide some compensation to driving laborers for their driving-related tasks through a “monthly driving bonus,” Ramirez Decl. (dkt. 33-3) ¶ 13 & Ex. A (Ghilotti memo titled “New Driving allowance procedure-sign-out for trucks”), which was a separate check. Ortega Depo., Grunfeld Deck, Ex. D at 138:22-139:15. The practice ended after “a few months.” Id. ¶ 13. 4 It was not replaced with any other system of compensating drivers for the loading and driving time. Id.

And, according to one plaintiff, Ghilotti retaliated against him by denying him future shifts when he complained about not being paid for time spent driving and loading. See Hodgkinson Deck ¶ 12 (“When I would bring it up, inevitably I was told that I was on a ‘no work schedule’ when I next called dispatch.... I once asked ... why I had not been scheduled to work[, and was told] that when I was ready to start driving trucks again without a problem, I would be put back on a work schedule.”); see also Gomez Deck ¶¶ 12-13 (supervisor threatened to deny future shifts).

Plaintiffs filed suit in state court in June 2012 under state and federal wage and hour statutes. See dkt. 1, Ex. A. After Plaintiffs filed an amended complaint in July* Ghilotti removed the case to federal court in August 2012 on the basis of federal subject matter jurisdiction. Id. Ghilotti filed its Answer in Séptember 2012, dkt. 12, and this Court granted Plaintiffs’ motion for leave to amend their complaint to add new claims in January 2013. See dkts. 25, 27. So far, partial depositions have been taken of the three named plaintiffs and Ghilotti’s “person most knowledgeable” about the company’s dispatch and record-keeping practices. See Cert. Mot. at 4,

Now before the Court are three motions: (1) Plaintiffs’ motion for conditional collective action certification under the FLSA; (2) Ghilotti’s motion to dismiss; and (3) 'Plaintiffs’ motion to strike Ghilotti’s affirmative defenses.

II. LEGAL STANDARDS

A. Collective Action Certification

Under the FLSA, individuals may bring suit “in behalf of himself or them *1203 selves and other employees similarly situated.” 29 U.S.C. § 216 (b). The statute does not define “similarly situated,” however, and neither has the Ninth Circuit. See Lewis v. Wells Fargo & Co., 669 F.Supp.2d 1124, 1127 (N.D.Cal.2009) (Wilken, J.). Within this Circuit, to determine whether plaintiffs are similarly situated, courts take a two-step approach. Id.

First, the court makes an initial, conditional determination of whether plaintiffs are similarly situated, “deciding whether a collective action should be certified for the purpose of sending notice to potential class members.” Id. The initial notice stage determination uses a “lenient [standard] that typically results in certification.” Id. (citing Wynn v. National Broadcasting Co., Inc., 234 F.Supp.2d 1067, 1082 (C.D.Cal.2002)). Plaintiffs must simply provide “substantial allegations, supported by declarations or discovery.” Kress v. PricewaterhouseCoopers, LLP, 263 F.R.D. 623, 627 (E.D.Cal.2009). And, courts need not even consider evidence provided by defendants at this stage. Id. at 628 (citing Lewis, 669 F.Supp.2d at 1128 ).

Then, once discovery is complete, and usually prompted by a defendant’s motion for decertification, the court makes a second determination, using a stricter standard. Id. At that point, the court “must make a factual determination” as to the “propriety and scope of the class,” considering “(1) the disparate factual and employment settings of the individual plaintiffs; (2) the various defenses available to the defendants with respect to the individual plaintiffs; and (3) fairness and procedural considerations.” Leuthold v. Destination America, Inc., 224 F.R.D. 462, 467 (N.D.Cal.2004) (Walker, J.).

Even at that second stage, the showing that must be made for collective actions is less stringent than what is required under Federal Rule of Civil Procedure Rule 23—“[a]ll that need be shown by the plaintiff is that some identifiable factual or legal nexus binds together the various claims of the class members in a way that hearing the claims together promotes judicial efficiency and comports with the broad remedial policies underlying the FLSA.” Lewis, 669 F.Supp.2d at 1127 (citing Wertheim v. Arizona, 1993 WL 603552 at *1 (D.Ariz.1993)).

Although courts occasionally skip the initial, notice stage determination, see, e.g., Basco v. Wal-Mart Stores, Inc., 2004 WL 1497709 at *5, 2004 U.S. Dist. LEXIS 12441 at *15 (E.D.La. July 2, 2004), courts in this Circuit overwhelmingly “refuse to depart from the notice stage analysis prior to the close of discovery,” see Kress, 263 F.R.D. at 629 (citing, among other cases, Labrie v. UPS Supply Chain Solutions, Inc., 2009 WL 723599 at *3 (N.D.Cal. Mar. 18, 2009) (Hamilton, J.)).

B. Motion to Dismiss

A motion to dismiss pursuant to Rule 12(b)(6) tests the legal sufficiency of the complaint. Ileto v. Glock, Inc., 349 F.3d 1191, 1199-1200 (9th Cir.2003). Dismissal is proper where a cause of action fails to state a claim upon which relief can be granted. Fed.R.Civ.P. 12(b)(6). The Rule calls for sufficient factual matter to “state a claim to relief that is plausible on its face.” Ashcroft v. Iqbal, 556 U.S. 662, 678 , 129 S.Ct. 1937 , 173 L.Ed.2d 868 (2009) (quoting Bell Atl. Corp. v. Twombly, 550 U.S. 544, 555 , 127 S.Ct. 1955 , 167 L.Ed.2d 929 (2007)). On a motion to dismiss, all well-pleaded allegations of material fact are taken as true and construed in the light most favorable to the non-moving party. Wyler Summit P’ship v. Turner Broad. Sys., Inc., 135 F.3d 658 , 661 (9th Cir.1998). A complaint should not be dismissed without leave to amend unless it is clear that the claims could not be saved by *1204 amendment. Swartz v. KPMG LLP, 476 F.3d 756, 760 (9th Cir.2007).

C. Motion to Strike

A party must “affirmatively state any avoidance or affirmative defense.” Fed.R.Civ.P. 8(c). “Affirmative defenses plead matters extraneous to the plaintiffs prima facie case, which deny the plaintiffs right to recover, even if the allegations of the complaint are true.” FDIC v. Main Hurdman, 655 F.Supp. 259, 262 (E.D.Cal.1987) (citing Gomez v. Toledo, 446 U.S. 635, 640-41 , 100 S.Ct. 1920 , 64 L.Ed.2d 572 (1980)). In contrast, a defense that alleges that plaintiff has not met its burden of proof is not an affirmative defense. Zivkovic v. S. Cal. Edison Co., 302 F.3d 1080, 1088 (9th Cir.2002).

Federal Rule of Civil Procedure 12(f) permits a court to “strike from a pleading an insufficient defense or any redundant, immaterial, impertinent, or scandalous matter.” A ruling on a motion to strike affirmative defenses must be based on matters contained in the pleadings. See Kelly v. Kosuga, 358 U.S. 516, 516 , 79 S.Ct. 429 , 3 L.Ed.2d 475 (1959).

A defense may be insufficient as a matter of law or as a matter of pleading. Sec. People, Inc. v. Classic Woodworking, LLC, No. C-04-3133, 2005 WL 645592 , at *2 (N.D.Cal. Mar. 4, 2005). As a matter of law, an affirmative defense is insufficient where “there are no questions of fact, that any questions of law are clear and not in dispute, and that under no set of circumstances could the defense succeed.” Ganley v. Cnty. of San Mateo, No. C06-3923 TEH, 2007 WL 902551 , at *1 (N.D.Cal. Mar. 22, 2007).

As a matter of pleading, the Ninth Circuit has long held that “[t]he key to determining the sufficiency of ... an affirmative defense is whether it gives plaintiff fair notice of the defense.” Wyshak v. City Nat’l Bank, 607 F.2d 824, 827 (9th Cir. 1979). While the Ninth Circuit has not directly addressed the issue, most district courts in this circuit agree that the heightened pleading standard of Twombly and Iqbal , which followed Wyshak , is now the correct standard to apply to affirmative defenses. See, e.g., Powertech Tech., Inc. v. Tessera, Inc., No. C 10-945 CW, 2012 WL 1746848 , at *4-5 (N.D.Cal. May 16, 2012); Perez v. Gordon & Wong Law Group, P.C., No. 11-CV-03323-LHK, 2012 WL 1029425 , at *6-8 (NJD.CaL Mar. 26, 2012) (collecting cases).

The Wyshak opinion relied on Conley v. Gibson, 355 U.S. 41 , 78 S.Ct. 99 , 2 L.Ed.2d 80 (1957) in formulating the “fair notice” rule, and Twombly and Iqbal effectively abrogated Conley. See Powertech Tech., Inc., 2012 WL 1746848 , at *5 (citing Perez, 2012 WL 1029425 , at *6). Also, the underlying rationale of Twombly — to give fair notice to the opposing party — is equally applicable to affirmative defenses, “given the purpose of Rule 8(b)’s requirements for defenses.” Barnes & Noble, Inc. v. LSI Corp., 849 F.Supp.2d 925, 929 (N.D.Cal.2012). Applying the heightened pleading standard to affirmative defenses “will also serve to weed out the boilerplate listing of affirmative defenses which is commonplace in most defendants’ pleadings where many of the defenses alleged are irrelevant to the claims asserted.” Id.

Accordingly, Defendant’s affirmative defenses must contain sufficient factual matter to state a defense that is “plausible on its face.” Ashcroft v. Iqbal, 556 U.S. 662, 678 , 129 S.Ct. 1937 , 173 L.Ed.2d 868 (2009) (citing Bell Atl. Corp. v. Twombly, 550 U.S. 544, 555 , 127 S.Ct. 1955 , 167 L.Ed.2d 929 (2007)).

A court may also strike a matter in an answer that is immaterial or impertinent. Fed.R.Civ.P. 12(f). Immaterial matter is “that which has no essential or important relationship to the claim for re *1205 lief or the defenses being pleaded.” Fantasy, Inc. v. Fogerty, 984 F.2d 1524, 1527 (9th Cir.1993), rev’d on other grounds, 510 U.S. 517 , 114 S.Ct. 1023 , 127 L.Ed.2d 455 (1994). Impertinent matter does not pertain, and is not necessary, to the issues in question. Id.

Where a court strikes an affirmative defense, leave to amend should be freely given so long as there is no prejudice to the moving party. Wyshak, 607 F.2d at 826 .

III. DISCUSSION

A. Collective Action Certification 5

Ghilotti presents four arguments in opposition to the motion for conditional certification: (1) Plaintiffs have not met their burden of showing the existence of a single decision, policy or plan tying together the collective; and, even if they have, (2) the statute of limitations should be set at two years because Plaintiffs have not shown willfulness; (3) a third-party administrator should be appointed to protect the privacy rights of putative collective members; and (4) the Proposed Notice is prejudicial and should be amended.

1. A Single Decision, Policy, or Plan

Ghilotti argues that it has procedures in place to ensure that employees are paid for all time worked; in essence, the company blames the employees for not requesting that they be paid for the time at issue. Employees receive a weekly report summarizing their hours worked, and that report includes a section where employees can note errors and specify additional time actually worked. Taylor Deck (dkt. 40) Ex. B. Ghilotti says that the named plaintiffs testified at their depositions that they knew about those forms, that they understood they could submit claims for additional time, and that no one ever told them that they could not submit such a form for driving and loading duties.

Indeed, Ghilotti says that Plaintiffs admitted during their depositions to being compensated, at least on some occasions, for transport and loading duties. See Ramirez Depo., Ruda Deck (dkt. 41) Ex. B at 112-13 (stating that he was paid for travel time on one occasion); Ortega Depo., Ruda Deck (dkt. 41) Ex. C at 132-33 (stating that supervisor let him leave early to return truck to yard “five to ten times” between 2008 and 2011).

Ghilotti also says that the company’s relevant decision-making is decentralized and placed largely in the hands the twenty to thirty foreman who supervise each job site, such that “no two job sites are alike, and no job description or set of rules universally applies to any laborer’s experience from one job site or one foreman to the next.” Cert. Opp’n at 4. In Ghilotti’s view, the issue of uncompensated work is thus highly individualized and unsuitable for collective adjudication.

Plaintiffs’ burden at this stage is light, and they have met it. Plaintiffs offer substantial allegations and evidence that Ghilotti had a universal practice of requiring that driving laborers perform loading and transport duties before and after their “official shifts” without compensation. In substance, the allegations here are equivalent to those in Escobar v. Whiteside Constr. Corp., No. 08-01120-WHA, 2008 WL 3915715 (N.D.Cal. Aug. 21, 2008), where the court held that conditional certification was warranted.

*1206 That individual supervisors deviated from that practice on rare occasions does not mean that the practice did not exist or that conditional collective certification is inappropriate. 6 And employees might not use the payroll discrepancy forms to insist on being paid for driving and transport duties for a variety of reasons, such as a fear of retaliation, see Hodgkinson Decl. ¶¶ 11-13, or a universal understanding that such a request would be futile, see Gomez Depo., Grunfeld Deck (dkt. 45-1) Ex. B, at 93. Anyway, Ghilotti was required to pay its employees for the time they worked regardless of how insistently the employees complained about the company’s failure to do so.

Accordingly, the Court GRANTS Plaintiffs’ Motion for Conditional Collective Certification.

2. Willfulness

An FLSA violation is willful if the “employer either knew or showed reckless disregard for the matter of whether its conduct was prohibited by the statute.” McLaughlin v. Richland Shoe Co., 486 U.S. 128, 133 , 108 S.Ct. 1677 , 100 L.Ed.2d 115 (1988). In cases involving “willful” violations, the normal two-year statute of limitations for FLSA violations is extended to three years. See 29 U.S.C. § 255 (a).

Where the issue of willfulness is disputed, district courts often conditionally certify the three-year period upon a preliminary showing, and reserve final ruling on the issue until later in the litigation. E.g., Stuven v. Texas de Brazil (Tampa) Corp., No. 8:12-CV-1283-T24TGW, 2013 WL 610651 , at *5-6 (M.D.Fla. Feb. 19, 2013); Francis v. A & E Stores, Inc., No. 06-Civ-1638-CLB-GAY, 2008 WL 2588851 , at *3 (S.D.N.Y. June 26, 2008).

Here, Plaintiffs have made an adequate threshold showing that Ghilotti management knew that its employees were required to perform uncompensated work. The company itself briefly experimented with a policy to provide some kind of compensation for driving duties, which is consistent with the company itself recognizing the problem. Also, Plaintiffs have put forth some evidence that key management personnel knew about the practice but refused to change it. See Hodgkinson Deck ¶ 12 (“[Ghilotti President] Mike Ghilotti was quite candid about the fact that [Ghilotti] did not pay for Loading and Transport duties performed by Laborers. On more than one occasion, I heard him tell Laborers that if they didn’t want to get in a truck and load it, they should go somewhere else and he could get other workers to take their place.”); Dent Deck ¶ 12 (stating that declarant overheard conversation where employee noted to Mike Ghilotti that laborers were complaining about driving off-the-clock, and asked if time clocks could be put in trucks, to which Mike Ghilotti responded “no, that’s not going to happen”).

Accordingly, the Court conditionally certifies a collective covering a three-year period.

3. Use of a Third-Party Claims Administrator

Plaintiffs are seeking the names, addresses, telephone numbers, and e-mail addresses of potential Plaintiffs from 2009 to the present, and Ghilotti argues that the Court should require that notice be disseminated by a third-party administrator “to protect the privacy interests of those potential class members who do not wish to ‘opt in.’ ” Cert. Opp’n at 10. In their view, third-party administrators “ensure the neutrality and integrity of the opt-in process.”

*1207 Ghilotti says that the cost of a third party administrator should be about $2,000; Plaintiffs say that only accounts for one mailing and does not include costs required to follow-up if the mailing generates no response.

Plaintiffs aver that they will use the contact information only for purposes of notifying potential plaintiffs in this action, and will only resort to e-mail and telephone if a mailed notice generates no response.

Both sides cite district court cases deciding whether a third party administrator is desirable, with no discernible pattern underlying the decisions. Requiring a third-party administrator here would drive up Plaintiffs’ costs, and Ghilotti has offered no persuasive reason to adopt a general presumption — nor any facts specific to this litigation suggesting — that plaintiffs’ counsel will violate their professional responsibilities.

Accordingly, the Court DENIES the request to require a third party claims administrator.

4. Specific Objections to the Proposed Notice

Ghilotti proposes numerous changes, only three of which merit any discussion:

“TO:” Line: Plaintiffs say that “Laborer” is a term of art under the Ghilotti Master Labor Agreement, and the definition of the Loading and Transport Subclass is not limited to Laborers. Though it is not clear whether, as a practical matter, people employed in positions other than “Laborer” would qualify as collective members, the proposed notice language tracks the definition of the collective, and so the Court REJECTS Ghilotti’s proposed change.

Notice Period: Another case from this district observed that “timeframes of sixty to ninety days appear to have become the presumptive standard in this district.” Sanchez v. Sephora USA, Inc., No. 11-03396-SBA, 2012 WL 2945753 , at *6 (N.D.Cal. July 18, 2012). Plaintiffs say that “employees covered by the collective action include individuals who are not native English speakers and who may be more difficult to track down once they have stopped working for the company,” and so thirty additional days could make a difference in response rates. Cert. Reply at 12. Ghilotti does not explain how a 30-day difference will have any meaningful impact on the overall efficiency and cost of the litigation, and since Plaintiffs have offered a reason it may result in more effective notice, the Court REJECTS Ghilotti’s proposed reduction of the opt-in period from 90 to 60 days.

Social Security Numbers: Finally, Ghilotti’s request to require partial social security numbers on the opt-in form runs contrary to its consistent position that this is a relative small, readily-identifiable group of employees. Ghilotti has not offered any reason to believe that it will be difficult to confirm that people responding to notices sent to names and addresses in the company’s records were, in fact, former employees. Ghilotti’s proposed change is unnecessary therefore REJECTED.

Ghilotti’s remaining proposed edits concern matters of subtle emphasis and style, none of which the Court concludes are necessary. None of the challenged por *1208 tions are misleading or inaccurate in any material respect. Accordingly, they are REJECTED.

B. Motion to Dismiss

Ghilotti argues that (1) certain claims added in Plaintiffs’ Second Amended Complaint should not relate back to the filing of the original complaint under Federal Rule of Civil Procedure 15(c); (2) certain other claims “must relate back only to the date of the specific pre-lawsuit letters which gives the employer notice of the alleged violations”; and (3) Plaintiffs’ “request for IWC penalties under Labor Code § 558 must be dismissed as an unlawful attempt at double recovery.”

As a threshold matter, Plaintiffs argue that these are not proper bases for a motion to dismiss because “Federal Rule of Civil Procedure 12(b)(6) cannot be used to challenge only certain allegations within a cause of action.” MTD Opp’n at 2. Plaintiffs say that Ghilotti is “request[ing] that the Court determine the extent of [Ghilotti’s] liability before Plaintiffs have an opportunity to take discovery on the scope and time period of Defendant’s violations.” Id.

In fact, however, these issues were ripe for decision under Rule 15 when Ghilotti raised them in opposition to Plaintiffs’ Motion for Leave to File the Second Amended Complaint, see dkt. 21; this Court deemed it prudent to defer ruling on them until Ghilotti presented all of its legal arguments challenging the Second Amended Complaint, and the Court stated in its Order that it would address them if brought again in connection with a motion to dismiss, see: Order (dkt. 25), which is precisely what Ghilotti has done.

No amount of discovery will inform or alter the outcome of any of the three issues Ghilotti raises; they require decisions about abstract questions of law and the application of that law to the pleadings. Resolving those issues now will clarify the scope of Ghilotti’s potential liability and move the litigation forward. The Court accordingly finds the issues suitable and appropriate for resolution at this time, whether construed as a motion under Rules 15, 12(b)(6), or 12(f). Cf. Sidney-Vinstein v. A.H. Robins Co., 697 F.2d 880, 885 (9th Cir.1983) (“[T]he function of a 12(f) motion to strike is to avoid the expenditure of time and money that must arise from litigating spurious issues by dispensing with those issues prior to trial .... ”).

1. Relation Back of New “Waiting Time Penalties” Claims in the SAC

Rule 15(c)(1)(B) provides that a new claim asserted in an amended pleading relates back to the date of the original pleading when the new claim “arose out of the conduct, transaction, or occurrence set out-or attempted to be set out-in the original pleading.” “The policies underlying the statute of limitations are implicated” in the relation-back analysis, and “amendment of a complaint is [thus] proper if the original pleading put the defendant on notice of the ‘particular transaction or set of facts’ that the plaintiff believes to have caused the complained of injury.’ ” Percy v. S.F. Gen. Hosp., 841 F.2d 975, 979 (9th Cir.1988).

The test calls for the district court to “compare[ ] the original complaint with the amended complaint and decide! ] whether the claim to be added will likely be proved by the ‘same kind of evidence’ offered in support of the original pleading.” Id. “[T]he purpose of Rule 15(c) is to defeat the bar of statutes of limitations, and is liberally applied especially if no disadvantage will accrue to the opposing party.” Rural Fire Protection Co. v. Hepp, 366 F.2d 355, 362 (9th Cir.1966).

*1209 Ghilotti challenges Plaintiffs’ addition in their Second Amended Complaint of new claims for “waiting time penalties” under California Labor Code § 203. See SAC ¶¶ 35, 36, 63, 70. Plaintiffs’ original complaint alleged that Ghilotti failed to provide proper meal and rest breaks, failed to pay Plaintiffs minimum wages and overtime compensation owed, and failed to furnish accurate wage statements. See generally Compl., dkt. 1-1. The new claims assert that Ghilotti had a practice of “effectively and involuntarily discharg[ing]” class members during the rainy season by not giving them any shifts, SAC ¶ 35, and that the practices alleged in the original complaint thus also violated California Labor Code sections requiring prompt payment to employees of overtime and minimum-wage compensation due to them upon discharge. See id. ¶¶ 63, 70.

Ghilotti says the claims should not relate back because they arise from a “completely new set of allegations” concerning seasonal staffing. MTD at 6. That overstates matters. The claims in Plaintiffs’ original complaint would be proven with evidence that Ghilotti did not provide proper meal and rest breaks, and required uncompensated work. The “waiting time penalties” claims would be proven with “the same kind of evidence,” but would only apply to employees who were discharged at some point in the limitations period. Ghilotti can hardly claim surprise that some of its construction laborers were discharged over the multiyear period at issue in this case.

One court facing a similar amendment concluded that a new waiting time penalties claim should relate back since the “[defendant was put on notice that it would have to defend against claims concerning its policies and practices with regard to overtime, timekeeping, and rest breaks.” DeLodder v. Aerotek, Inc., No. CV-08-6044-CAS-AGRx, 2009 WL 1684409 , at *5 (CJD.Cal. June 15, 2009). This Court reaches the same conclusion.

2. “Relation Back” of New PAGA Claims in the SAC

The parties next argue about whether Plaintiffs’ newly added claims under California’s Private Attorneys General Act (PAGA), Cal. Labor Code § 2698 , et seq., relate back to the original pleading. The statute of limitations on Plaintiffs’ PAGA claims is one year. See Moreno v. AutoZone, Inc., No. 05-04432-MJJ, 2007 WL 1650942 , at *2 (N.D.Cal. June 5, 2007). PAGA itself provides that the statute of limitations is tolled while a plaintiff exhausts his administrative remedies with California’s Labor and Workforce Development Agency (LWDA) prior to suit, which is required by the statute. See Cal. Labor Code § 2699.3 (d). Another provision in PAGA, California Labor Code § 2699.3(a)(C), provides that “[Notwithstanding any other provision of law, a plaintiff may as a matter of right amend an existing complaint to add a cause of action arising under this part at any time within 60 days of the time periods specified in this part.”

Here, Plaintiffs’ original complaint included allegations that Ghilotti failed to provide required rest and meal periods, and also failed to pay minimum and overtime wages owed to its employees. See Compl. (dkt. 1-1) ¶¶ 1-2. Plaintiffs first notified the LWDA of their rest break and minimum wage claims under PAGA in a June 2012 letter, and filed their original complaint on the same day bringing PAGA claims reflecting those theories. See Compl. (dkt. 1-1) ¶ 87; Grunfeld Decl. (dkt. 24-1) Ex. B. Later, in November 2012, Plaintiffs sent a second letter to the LWDA, this time notifying it of Plaintiffs’ meal period and overtime claims under PAGA. The SAC added the PAGA claims identified in Plaintiffs’ November 2012 LWDA letter.

*1210 In similar cases where plaintiffs have filed a complaint alleging all of the relevant facts and then later timely exhausted administrative remedies and amended the pleadings to, include PAGA claims, courts have permitted the later PAGA claim to relate back to the filing of the original complaint, even where that complaint predated the filing of the administrative claim. See Martinez v. Antique & Salvage Liquidators, Inc., No. C09-00997-HRL, 2011 WL 500029 , at *9-10 (N.D.Cal. Feb. 8, 2011); Waisbein v. UBS Fin. Servs. Inc., No. C-07-2328-MMC, 2008 WL 753896 , at *1 (N.D.Cal. Mar. 19, 2008).

Ghilotti’s argument that the claims should relate back only as far as the November 2012 LWDA letter rests on the premise that “PAGA claims do not accrue until statutory notice is provided.” See MTD at 7. That is not the law. In fact, as explained in the case Ghilotti itself cites, PAGA’s administrative exhaustion requirement is a precondition to suit, but it does not affect the date that a plaintiffs PAGA claim accrues. See Moreno, 2007 WL 1650942 , at *4.

Ghilotti will suffer no unfair prejudice or surprise by confronting PAGA claims relating back to the original complaint, as that complaint alleged all of the relevant facts underlying the PAGA cause of action.

3. PAGA Penalty “Double Dipping”

Ghilotti insists that Plaintiffs’ SAC requests penalties “under both PAGA and Labor Code § 558 for each instance of a failure to comply with an overtime provision of an IWC wage order,” and that a recent California case precludes such “double dipping.” See Thurman v. Bayshore Transit Mgmt., Inc., 203 Cal.App.4th 1112, 1132-33 , 138 Cal.Rptr.3d 130 (Ct.App.2012).

Plaintiffs say the SAC requests no such thing. Rather, it seeks only California Labor Code section 558 penalties under PAGA. MTD Opp’n at 9. And, Plaintiffs correctly note, Thurman acknowledged the availability of section 558 civil penalties in a PAGA action. See 203 Cal.App.4th at 1125-26, 1132-33 , 138 Cal.Rptr.3d 130 . The Court’s review of the SAC has identified no specific request for PAGA penalties under both California Labor Code section 558 and an IWC wage order.

Accordingly, Ghilotti’s motion to dismiss is DENIED in its entirety.

C. Motion to Strike Affirmative Defenses

Ghilotti’s Answer to Plaintiffs’ SAC asserts fifteen affirmative defenses. See dkt. 31 at 15-18. Plaintiffs accurately characterize all fifteen as “brief legal conclusions, entirely devoid of any factual allegations,” and move to strike them. Mot. Strike at 4. Plaintiffs also argue that many of the asserted defenses could not be saved by amendment, either because they are not actually affirmative defenses, or because they fail as a matter of law based on the facts alleged in the complaint.

Ghilotti’s opposition rests on the premise that some pleading standard lower than Twombly and Iqbal applies to affirmative defenses — a position this Court rejects for the reasons set forth above. See Part II.C. And, Ghilotti has not responded at all to Plaintiffs’ detailed breakdown of which affirmative defenses could be saved by amendment, conceding the issue. 7

*1211 The Court accordingly GRANTS Plaintiffs’ motion to strike all fifteen affirmative defenses, and grants Ghilotti leave to amend only as to its eighth, ninth, and fourteenth affirmative defenses.

IV. CONCLUSION

For the foregoing reasons, the Court GRANTS Plaintiffs’ Motion for Conditional Collective Certification, DENIES Ghilotti’s Motion to Dismiss, and GRANTS Plaintiffs’ Motion to Strike. Regarding conditional certification, the Court ORDERS:

1. Certification of a collective action of the Loading and Transport Subclass is approved. As described in the operative complaint, the conditionally certified collective action class is comprised of:

Dkt. No. 27, ¶41.

2. Within 10 days of this Order, Defendant shall provide to Plaintiffs the contact information, including names, addresses, telephone numbers, and email addresses, if available, for all members of Loading and Transport Subclass. Defendants shall provide this contact information for all laborers who have worked for Defendant at any time since June 2009 who are or were either on the company’s “eligible driver” lists or who have driven a truck to or from a job site for Defendant Ghilotti (the “List”). At a minimum, this list must include any employee listed as driving a Ghilotti truck on any of Defendant’s dispatch reports from June 2009 to the present.

3. If there is any dispute about the scope of the List, Defendant shall provide the required contact information for all individuals for whom there is no dispute within 10 days of this Order, and then the parties shall meet and confer to attempt to resolve any disputes about the scope of the proposed List of potential class members. After any necessary meet and confer, a complete list must be provided to Plaintiffs within 20 days of this Order. If there remains a dispute about the List, the parties may return to Court through a motion with time shortened from 35 to 14 days, with simultaneous briefing seven days before the hearing.

4. Plaintiffs’ proposed Notice of Court Certification is approved. Plaintiffs are authorized to send the Notice in English and Spanish to all members of the certified collective class. The Court also authorizes Plaintiffs to send a second notice, substantially the same as the first, as a reminder forty-five days after the issuance of the first notice.

5. In order to ensure that all potential class members are aware of their right to join the collective action, within 30 days of *1212 this Order, Defendant shall also be required to post the Notice in English and Spanish at each of Defendant’s four yards on a piece of paper at least 8.5 by 11 inches in a prominent location accessible to potential class members.

IT IS SO ORDERED.

. See Cert. Mot. at 11.

. Formally defined in the Second Amended Complaint as: "All present and former nonexempt employees of Defendants who have worked at a construction site, yard, or loading areas as a laborer at any time from four years prior to the filing of this action, until the resolution of this action, whose work included the loading and unloading of Defendants' trucks and the transport of necessary construction equipment to and from job sites prior to the start of their shifts and following the conclusion of their shifts.” SAC ¶41.

.While the Court cites only one declaration for each of the factual propositions here, Plaintiffs submitted seven largely-overlapping declarations describing the relevant facts. See, e.g., Ramirez Decl. (dkt. 33-3); Gomez Decl. (dkt. 33-4); Lepe Decl. (dkt. 33-5); Lessard Decl. (dkt. 33-6); Dent Decl. (dkt. 33 — 7); Hodgkinson Decl. (dkt. 33-8).

. Ghilotti President Mike Ghilotti said in a deposition that the program was terminated because it was redundant, see Ghilotti Depo., Grunfeld Deck (dkt. 33-1), Ex. A, at 179; -as will be discussed below, Ghilotti’s position is that it already had mechanisms to compensate workers for driving and loading time.

. Ghilotti submitted a separate, 12-page list of evidentiary objections to Plaintiffs’ declarations submitted in support of their motion. See dkt. 42. Local Rule 7-3 (a) requires that such objections “be contained in the brief or memorandum” submitted in opposition to the motion. The Court accordingly STRIKES Ghilotti’s separately-filed objections and does not consider them in ruling on these motions.

. Ghilotti is free to revisit the issue on a motion for decertification should it develop evidence that the deviations were more than isolated occurrences.

. See, e.g., Qureshi v. Countrywide Home Loans, Inc., No. 09-4198, 2010 WL 841669 , at *6 n. 2 (N.D.Cal. Mar. 10.2010) (deeming plaintiffs failure to address, in opposition brief, claims challenged in a motion to dismiss, an "abandonment of those claims”) (citing Jenkins v. County of Riverside, 398 F.3d 1093 , 1095 n. 4 (9th Cir.2005)); Sportscare of America, P.C. v. Multiplan, Inc., No. 2:10-4414, 2011 WL 589955 , at *1 (D.N.J. Feb. 10, 2011) ("In most circumstances, failure to respond in an opposition brief to an argument *1211 put forward in an opening brief constitutes waiver or abandonment in regard to the uncontested issue.”); Scott v. City of Phoenix, No. CV-09-0875-PHX-JAT, 2011 WL 3159166 , at *10 (D.Ariz. Jul. 26, 2011) (failure to oppose statute of limitations argument constituted waiver); Foster v. City of Fresno, 392 F.Supp.2d 1140 , 1147 n. 7 (E.D.Cal.2005) ("At any rate, failure of a party to address a claim in an opposition to a motion for summary judgment may constitute a waiver of that claim.”); In re Online DVD Rental Antitrust Litig., No. 09-2029 PJH, 2011 WL 5883772 , at *12 (N.D.Cal. Nov. 23, 2011) (absent unusual circumstances, failure to respond to argument on merits "viewed as grounds for waiver or concession of the argument”).