Construction is badly affected by the economic downturn in the World. May be not as bad as Dubai, in that site works are still going on, but projects that are currently been designed have mostly stopped, both private and government. If your job offer is sound then take it quickly. Most companies in Qatar have stopped recruiting and indeed are looking to trim their wage bills. so good luck. do not believe some of the posts on here that say construction is not affected, it is propaganda.