A federal judge has denied certification of a class of workers at assisted-living facilities in California who claim they were denied meal and rest periods. However, he certified workers who are suing for other unpaid wage claims.

The class action was filed behalf of nearly 12,000 current and former hourly employees of Sunrise Senior Living Management Inc., a subsidiary of Sunrise Senior Living LLC, based in McLean, Va., which operates 40 facilities in California. Plaintiffs attorneys had sought to certify nine subclasses of employees who worked at Sunrise since Feb. 25, 2009.