RasGas is having one of the best working environment in the country. You did not mention what is your position. Admin staff has got a very pleasureable working hours 7-3. A lot of people claiming to be RasGas employees ( in fact some of them are hired by some Contractors ) are complaining about long working hours. It is better you check with your Contract.
Secondly what is the harm if it is a project based technical job, to work more hours ? They already offer handsome salaries