Standard Concrete Products Inc. v. General Truck Drivers, Office, Food & Warehouse Union, Local 952

Plaintiff Standard Concrete Products (“Standard Concrete”) delivers concrete throughout Southern California. Relevant to this appeal, Standard Concrete has facilities in Riverside County and in Orange County. The International Brotherhood of the Teamsters, General Truck Drivers, Office, Food & Warehouse Union, Local 952 represents Standard Concrete’s employees at its Corona facility in Riverside County (“Corona bargaining unit”). Local 952 also represents Standard Concrete’s employees at its three Orange County facilities (“Orange County bargaining unit”) under a separate collective bargaining agreement.

In January 2000, the Corona bargaining unit went on strike against Standard Concrete. The strike was called because the Corona bargaining unit believed that Standard Concrete was negotiating with Local 952 in bad faith. Members of the Corona bargaining unit established picket lines at the Corona facility. On the second day of the strike, the Corona bargaining unit extended its picket lines to Standard Concrete’s three facilities in Orange County. Members of the Orange County bargaining unit honored the Corona bargaining unit’s picket lines.

At issue in this case is whether the…