Mike Jimenez, California Correctional Peace Officers Association president, told the union's board last weekend that he will take a 90-day leave of absence, effective May 1.
Jimenez, who was re-elected to a second three-year term last fall, is having surgery, said CCPOA spokesman Lance Corcoran.
"It's not terminal. Mike's fine. It's no big deal," Corcoran said when reached by cell phone this morning. "Sometimes you have to take care of yourself before you can take care of others."
He did not specify why Jimenez is having the surgery.
Chuck Alexander, the union's executive vice president, will take over during Jimenez's absence, Corcoran said.