Not true. A lot of them were cheated. Dubai government turns a blind eye to these practices.
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From the guardian article:
"All of these men are part of a huge scam that is helping the construction boom in the Gulf. Like hundreds of thousands of migrant workers, they each paid more than £1,000 to employment agents in India and Pakistan. They were promised double the wages they are actually getting, plus plane tickets to visit their families once a year, but none of the men in the room had actually read their contract. Only two of them knew how to read.
"They lied to us," a worker with a long beard says. "They told us lies to bring us here. Some of us sold their land; others took big loans to come and work here."
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From the independent article
http://www.independent.co.uk/opinion/commentators/johann-har...
Since the recession hit, they say, the electricity has been cut off in dozens of the camps, and the men have not been paid for months. Their companies have disappeared with their passports and their pay. "We have been robbed of everything. Even if somehow we get back to Bangladesh, the loan sharks will demand we repay our loans immediately, and when we can't, we'll be sent to prison."
This is all supposed to be illegal. Employers are meant to pay on time, never take your passport, give you breaks in the heat – but I met nobody who said it happens. Not one. These men are conned into coming and trapped into staying, with the complicity of the Dubai authorities