Nearly 4,000 Washington, D.C., Virginia and Maryland health care workers overwhelmingly voted to approve an unfair labor practice strike at Kaiser Permanente. The workers, members of Office and Professional Employees (OPEIU) Local 2, say that Kaiser’s refusal to acknowledge understaffing is driving a growing crisis in patient care. They voted to authorize an unfair labor practice strike by 98% if an agreement isn’t reached by Sept. 30.