California State’s high court has ruled that the City of Los Angeles’ Grocery Worker Retention Ordinance did not usurp other federal or state laws or violate the Constitution. The court’s decision in California Grocers Association v. City of Los Angeles revives the ordinance, which has been voided by lower courts. The ordinance applies to grocery stores of at least 15,000 square feet and generally requires new owners to retain current employees for 90 days. Numerous other California municipalities have similar ordinances that restrict the ability of certain employers to replace the existing workforce upon acquiring a new business. 09-02-2011. California Employer Advisor.