For a covered part-time employee, hours beyond the contracted daily hours but not beyond a comparable full-time employee’s normal hours are paid at the basic hourly rate.
Hours beyond the comparable full-time threshold are paid at 1. 5 times that rate.
Confirm part-time status
MOM generally treats an employee working under 35 hours a week under a contract of service as part-time for these rules. Coverage and the written schedule matter. Save the contract, weekly hours and job comparator before calculating a single shift. (MOM part-time overtime guide)
The second rate boundary comes from the normal hours of a similar full-time employee, not an arbitrary eight-hour assumption. Use the same type of work and workplace where possible, and document the comparator.
Contracted hours form the first band, extra hours up to the full-time threshold form the second, and hours beyond it form the 1.5-times band. Draw the shift on a time line and exclude unpaid breaks consistently.
| Situation | What changes |
|---|---|
| Worked only contracted hours | No overtime band arises |
| Worked beyond part-time hours but within full-time hours | Pay the extra hours at basic hourly rate |
| Worked beyond comparable full-time hours | Pay those excess hours at 1.5 times basic hourly rate |
| No clear comparable full-time schedule | Resolve the comparator before payroll closes |
Use the basic hourly rate
The overtime formula uses the hourly basic rate of pay. Allowances and gross pay components should not be inserted without support. Tie the rate to the contract and payroll record, including any monthly-to-hourly conversion used. (MOM part-time employment overview)
MOM illustrates a four-hour part-time day against an eight-hour full-time day. A nine-hour shift produces four extra hours at basic rate and one hour at 1.5 times. The arithmetic changes if the contract, comparator or break duration differs.
Record date, actual start and end, breaks, approved overtime, rate bands and amount paid. A total overtime figure without underlying hours is difficult for either party to verify.
Example: A part-timer contracted for four hours works nine hours, while a comparable full-timer normally works eight. At S$12 an hour, extra pay is four hours at S$12 plus one hour at S$18, totalling S$66. This excludes the four contracted hours.
Resolve disputes with records
Rosters, time clocks, messages and payslips should tell the same story. If they conflict, correct the source record before rolling the result into later payroll. Employees should raise discrepancies promptly through the employer process and use official dispute channels if unresolved.
