Patient technical care workers and other union employees across the state, including in San Diego, on Tuesday started a three-day walkout aimed at UC Medical Centers.

The strike follows a year and a half of deadlocked negotiations over wages and health care premiums, as well as union concerns over outsourcing, according to labor officials.

Picketers targeted UC San Diego’s La Jolla and Hillcrest medical centers. UC San Diego Health said in a statement: “All UC San Diego Health hospitals and clinics will remain open and fully functional. All scheduled surgeries and procedures are expected to proceed.”

“UC San Diego Health’s first priority, now and always, is to provide our patients with safe, high-quality medical and surgical care. We serve many of the region’s sickest and most fragile patients. Any patients who may be affected by the strike will be contacted by our patient care teams,” the statement continued.

The American Federation of State, County and Municipal Employees, or AFSCME, organized the statewide strike, supported by University Professional & Technical Employees union.

“The University of California has continuously ignored workers’ concerns over the outsourcing of good middle-class jobs,” Monica De Leon, vice president of AFSCME Local 3299’s patient care technical unit, said in a statement.

This isn’t the first sign of tensions and faltering negotiations. In May, workers spanning the UC health system went on strike.