A decades-long standoff between Las Vegas’ largest unions and the Venetian and Palazzo ended Tuesday with the announcement that operators of the Strip properties would stand aside and allow the labor groups to organize the properties’ non-gaming workforce.

The joint announcement from Culinary Workers Local 226, Bartenders Local 165, Operating Engineers Local 501 and Teamsters Local 986, comes some 16 months after the Las Vegas Corp. sold the two resorts and the Venetian Expo for $6.25 billion to private equity firm Apollo Global Management and real estate investment trust VICI Properties. Apollo manages the two resorts under an agreement with VICI, the properties’ landlord.

The two resorts are the last operating on the Strip without a union agreement with the Culinary, the state’s largest labor organization.