Thanks a lot to everyone who has commented in this thread.

I am now trying to make a back-up plan as I have a very good reason to think they might try NOT to pay me any of my dues.

Has anyone been to Ministry of Labour/Human Rights commission or spoke to a lawyer about something similar? I have been looking for a lawyer here but law firms in Doha seem to only consult companies, not individuals. Does anyone have contacts of a lawyer who does consult individuals on employment matters?

I am as humble as I can be in this situation Molten Metal, but thank you for your advice.