Nearly 5,000 Macy’s workers at four New York stores, including the Herald Square flagship, voted on Thursday to authorize a strike that could take place as soon as June 15 when a contract extension expires.

Among the contentious issues are health care benefits, pay and employees’ right to opt out of working on holidays, according to officials for Local 1-S of the Retail, Wholesale and Department Store Union.

The union also contends that the department store chain wants to cap some employees’ pay, making them ineligible for automatic raises, and exclude counter managers, among other workers, from the contract.

“Any discussions for calls to strike by the union are an expected and standard part of the negotiation process,” Macy’s said in a statement.