About 2,000 employees who work at the Strip resort will be represented under terms of the contract.
Union officials, according to the release, said nearly all employees voted to accept the first-time contract, which was ratified last week.
In a statement, Ted Pappageorge, secretary-treasurer for the Culinary Union and lead negotiator for the deal, called the contract “strong.”
The resort, the newest on the Strip, opened in June. Negotiations for the contract started in December. The contract is set to start on June 1.