THE MINISTRY of Labour will investigate a labour dispute at NagaWorld Hotel and Casino after 15 employees were recently laid off, the Ministry of Labour said on Thursday. Sok Narith, head of the workers union at NagaWorld, said his colleagues demand their jobs back, not compensation. A letter from the Cambodia Tourism and Service Workers Federation to the Labour Ministry on Monday accuses NagaWorld of violating an International Labour Organisation treaty and the Kingdom's labour laws.