BERKELEY (CBS SF) — More than 11,000 clerical and administrative support workers are on a one-day strike against the 10-campus University of California system and medical centers.

The strike Tuesday by members of Teamsters Local 2010 comes amid negotiations over a new contract.

READ MORE: Alameda DA Charges Three With Fraud in Workers' Compensation Scheme

The union claims violations of state law by the university and unfair labor practices including failure to bargain in good faith, among other allegations.

READ MORE: Summer Departs With Sweltering Temperatures; Smoky Skies Draped Over East Bay

A UC statement asserts that the strike is counterproductive to negotiations in which it is offering market-competitive wage increases and good benefits.

The labor action coincides with a strike by more than 600 plumbers, electricians and other trades workers at the University of California, Los Angeles. That five-day strike began Friday.

MORE NEWS: Monterey Police Arrest Two For Numerous Offenses Following Shooting

© Copyright 2017 by CBS San Francisco and Bay City News Service. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.