A TEAM of Commercial Crime Bureau officers may go to Thailand to investigate claims by imported workers on the Kwai Chung viaduct project they have been cheated of their wages. Police will look at differences between labour laws in Hong Kong and Thailand, where the contracts were stamped by the Department of Employment. The employment agency in Thailand responsible for providing passage for the 840 workers said it believed the contracts it had provided complied with Hong Kong regulations. The manager of the Phothinan Engineering and Manpower agency in Bangkok, Tienwattanakul Theerasak, said there was nothing wrong with the contracts, which stated the workers should receive $4,950 each month for their work. But the workers said money had been transferred out of their accounts. Police are looking into whether false signatures were involved in auto-pay authorisation process. They also asked individual workers when they were first asked to sign the contracts. About 300 statements and signatures were collected at the weekend. Hundreds of copies of contracts have been submitted to the Legal Department for examination.