Qatari Labour Law states that all employees (muslims and non-muslims) should work reduced Ramadan timings (6 hours per day).

they could work up to 8 hours per day max., but they should be paid the 2 hours as extra hours.

If you are interested in checking the Qatar Labour Law for more details, pls follow the link below:

http://www.qatarembassy.net/Qatar_Labour_Law.asp