I really feel for you. Thats a horrible thing to go through in your own country let alone when you are away from everything that's familiar.

If the changes are unreasonable then I would suggest you go to the most senior person of the company (eg Country Manager), if you have no luck with them do they have a superior you can speak to (eg Area Manager)

There is a Ministry of Labour & Social Affairs here in Qatar and they do have a disputes division where a claim can be lodged - www.mlsa.gov.qa.

My husband has had a few changes to his work conditions since he has been here but I think flexibility is the key sometimes but if the changes are unreasonable then I would encourage you should stand up for what is right!

Good Luck