Working in a company is totally depends upon you, if u r not interested to work with the company, no one can stop U. the main thing is whether the Employer will give NOC or not. If the Employer is not giving the NOC u will be banned up to two years after ur Visa Cancellation. If u r really not interested to work, u meet ur HR and tell some reasons to quit the job. in Qatar no one can force u to work. if any body is forcing u to work u can approach Labour Dept which is in Industrial Area & C Ring Road. they will solve the issue with in a month. dont worry my friend, Labour Dept allways favours Employee. all d best