The Cambodian National Federation of Building and Wood Workers issued a statement Tuesday accusing a construction group of threats against workers and abuse of labor rights in the building of a hotel next to Phnom Penh's Naga casino.
The union said it was disappointed because earlier this month the Cambodia China Asia Group laid off 36 member workers due to their union affiliation.
A company spokesman, Sin Peang, said they were laid off because their specialties were no longer needed.
Federation president Sok Sovandeth said the workers were now afraid of being put in prison.
"They were driven from the place where they live," he said. "Therefore, they do not dare come out in the open, because of the threats."