Teamsters Local 25 members at Airgas in Hingham are on strike after voting down what they say is an unfair contract proposal.

“The Costco Teamsters National Negotiating Committee has reached a tentative agreement for a new contract. Additional details will be shared soon. The tentative agreement will be presented to the membership for a vote. Stay tuned,” the Teamsters said in a Facebook post on Saturday.

The looming threat of 18,000 Costco store employees heading to the picket lines appears less likely, with the Teamsters labor union announcing Saturday that it has reached a tentative agreement for a new contract with the grocery chain.

Costco and the Teamsters union came to a tentative contract agreement, averting a scheduled strike by its 18,000 union members in 56 stores.

U.S.-based membership-only retail chain Costco (COST) has dodged a nationwide strike after Teamsters agreed to a tentative deal. The

If the union had gone on strike, it would been the largest work stoppage at a U.S. retail chain in history, and the first for a big-box retailer.

A threatened strike at 56 Costco stores across six states has been averted for now, as the company and negotiators for the Teamsters union, representing 18,000 workers, reached an 11th hour tentative agreement,

Costco Wholesale and the Teamsters union have reached a tentative agreement on a new contract, averting a strike that could have disrupted operations. The

A tentative agreement between Costco and the Teamsters came just hours before workers were set to walk off the job.

The union represents 18,000 Costco workers in California and five other states, Washington, Maryland, Virginia, New Jersey and New York. Teamsters spokesman Matthew McQuaid confirmed the deal, which will have to be approved by members.