Mooney

FOR PUBLICATION

UNITED STATES COURT OF APPEALS

FOR THE NINTH CIRCUIT

RICHARD MOONEY, Nos. 23-3552 23-3683 Plaintiff – Appellee / D.C. No. Cross-Appellant, 2:20-cv-01030- LK v.

ROLLER BEARING COMPANY

OF AMERICA INC, a Delaware OPINION corporation,

Defendant – Appellant / Cross-Appellee.

Appeal from the United States District Court for the Western District of Washington Lauren J. King, District Judge, Presiding

Argued and Submitted February 14, 2025 Seattle, Washington

Filed June 5, 2025

Before: William A. Fletcher, Ronald M. Gould, and Jacqueline H. Nguyen, Circuit Judges. SUMMARY*

Prejudgment Interest

The panel affirmed the district court’s application of a fluctuating federal rate in calculating prejudgment interest in a case in which Richard Mooney, who prevailed at trial on his claims under the federal Family and Medical Leave Act and the Washington Family and Medical Leave Act, received an award of compensatory damages against his former employer Roller Bearing Company of America (RBC). The panel held that when a judgment is based on both state and federal claims, without any distinction…