That includes UCSF where 2,500 nurses are expected to walk the picket line on June 10. The key sticking point is nurse to patient staffing.
"Some of our nurses are caring for up to 10 patients, so that their colleagues can get something to eat after a 12-hour shift. This is unacceptable and it's unsafe," contract negotiator James Darby said.
The nurses say if their patients need them they will go in and take care of them during the strike.
A UC spokeswoman says their hospitals follow the law and the union's allegations are without merit.