The fast-casual chain has over 500 locations in the United States.
The Seattle-based "made on demand" pizza joint Mod Pizza first opened its doors in 2008.
They thought the minimum wage hike was the cause of the closures.
This pizza joint, which was previously called "the Chipotle of the pizza industry," uses stone ovens to create individual pizzas to orders of various sizes and flavors.
(Before implementing a mass layoff, California law mandates that businesses provide 60 days' notice.)
Some workers supported the minimum wage hike at first, but now they're worried the measure may have the opposite effect.
No comprehensive list of the Mod Pizza locations closing outside of California has been released at this time.