In Russia, Kazakhstan and Belarus
Russia
No more than 4 hours over 2 consecutive days and 120 hours a year, usually with the employee’s written consent (Art. 99 of the Labour Code). Instead of higher pay, you can take extra rest time (Art. 152 of the Labour Code).
Kazakhstan
Overtime is limited to 2 hours a day (1 hour for heavy work) and 12 hours a month, and is paid at no less than one and a half times the rate.
Belarus
Overtime is paid at no less than double the rate; alternatively, at the employee’s request, another day off can be given.
Sources: Labour Code of the Russian Federation («Трудовой кодекс РФ»), ConsultantPlus