Final answer:
In Singapore, workers have an overtime limit of 72 hours per month, which can be exceeded with an exemption from the Ministry of Manpower.
Step-by-step explanation:
The overtime limit in Singapore for workers is 72 hours per month. However, this limit may be exceeded in some circumstances. Employers must obtain an exemption from the Ministry of Manpower to extend the overtime hours. Workers' regular work hours and overtime cannot exceed 12 hours per day, aligning with the concept of a time budget constraint, where leisure hours and working hours together cannot exceed the 24 hours available in a day.