About 200 workers at the "Mercados Su Vianda" say on Saturday they were suddenly told they were no longer employed.
They claim the store managers only gave them 25 percent of the wages they were due, and threatened to call the police if they didn't leave the premises.
"Many people were threatened that their social security numbers were going to be checked if they talked to members of the community," justice for Mercado workers Geraldo Dominguez said.
A representative for the workers says he expects a class action suit will be filed. The store owner hasn't commented on the situation.