The Safeway grocery chain posted flyers at its Northern California stores seeking temporary workers in case the 25,000 UFCW workers go on strike Saturday morning. Two-hundred-forty stores would be impacted by a work stoppage.

MARTINEZ — Hours before thousands of Safeway workers across the Bay Area were set to strike, workers for UFCW Local 5 and UFCW Local 648 agreed to a tentative agreement with the company Saturday that would guarantee higher wages and improved benefits for workers.