Disgruntled casino workers are becoming a costly thorn in Macau's side.
As the Chinese territory races to build eight new resorts in the next three years, labor strains look set to intensify: workers are demanding higher pay and threatening strikes at a time when operators face a labor shortage.
Las Vegas kingpins Sheldon Adelson at Las Vegas Sands and Steve Wynn at Wynn Resorts together reported unexpected costs of $50 million last quarter for labor-related compensation at their Macau casinos.
Casino industry analysts expect the other four licensed operators in the world's biggest gambling hub - Galaxy Entertainment, MGM Resorts, SJM Holdings and Melco Crown Entertainment - to announce similar cost pressures when they post earnings this month.
Located on China's south coast, Macau is the only place in the country where casino gambling is legal. The special administrative region boasts 35 casinos and relies on gaming taxes for more than 80 percent of government revenues.