LOS ANGELES—A tentative deal was reached Nov. 13 between Kaiser Permanente and union leaders that will prevent a strike by thousands of nurses and other health care workers who were planning to hit the picket line Nov. 15 at Kaiser facilities across Southern California and beyond. Kaiser and the Alliance of Health Care Unions agreed on a four-year contract covering nearly 50,000 health care employees in 22 local unions, according to union spokesman Jeff Rogers. “The Alliance of Health Care Unions fought to preserve a Kaiser Permanente where patients can count on excellent patient care and service. This has guided our work for 24 years. This agreement will mean patients will continue to receive the best care, and Alliance members will have the best jobs,” said Hal Ruddick, executive director of the alliance. “This contract protects our patients, provides safe staffing, and guarantees fair wages and benefits for every Alliance …