10 with casino giants MGM Resorts International, Caesars Entertainment and Wynn Resorts.

The Culinary Workers Union said about 35,000 members whose contracts expired earlier this year could walk off the job if deals aren't reached by Nov.

Tens of thousands of Las Vegas hotel workers fighting for new union contracts set a strike deadline Thursday, threatening major disruptions at more than a dozen resorts that could coincide with the Strip's inaugural Formula 1 races later this month.