Oakland’s largest public employees union filed a lawsuit in Alameda County Superior Court Tuesday alleging the City of Oakland is violating its City Charter with an over-reliance on part-time workers.

Representatives for the Service Employees International Union (SEIU), Local 1021 contend Oakland administration is undermining full-time positions with less expensive temporary workers.

“Just like the fast food industry and WalMart, the City of Oakland, is splitting full-time jobs into part-time gigs,” said Felipe Cuevas, president of SEIU Local 1021, Oakland chapter.

“This means these employees get no benefits and no vacation, and have few rights if they are victims of retaliation or other management abuses,” said Cuevas. “This can’t go on.”

The filing is an extension of the current contentious labor dispute between SEIU Local 1021 and the city administration.

According to the lawsuit, the union is asking the court for Oakland to “cease and desist” from creating new part-time positions, suspending the practice of annually hiring non-seasonal workers, and removing part-time position before they become eligible for retirement benefits.