Union workers at Kaiser Permanente hospitals in California are authorizing a strike that can take place if they aren’t satisfied with contract talks. The union is part of a coalition of 80,000 Kaiser workers in eight states. They say a potential strike would be the largest of its kind since the 1997 Teamsters strike against UPS. Kaiser officials say the union is being misleading and using the vote as a bargaining tactic. They say most contracts don’t expire until October.