How this Singapore overtime calculator works
Singapore overtime pay is generally calculated using the hourly basic rate of pay multiplied by 1.5 and the number of overtime hours worked. This calculator is designed for monthly-rated employees.
1. Calculate hourly basic rate
For a monthly-rated employee, hourly basic rate is estimated as: (12 × monthly basic salary) ÷ (52 × weekly working hours).
2. Apply overtime multiplier
Standard overtime pay is usually at least 1.5 times the hourly basic rate of pay.
3. Multiply by OT hours
Overtime pay is estimated by multiplying the overtime hourly rate by the number of overtime hours worked.
Singapore overtime formula
The basic overtime formula used by this calculator is:
| Item | Formula | Example |
|---|---|---|
| Hourly basic rate | (12 × monthly basic salary) ÷ (52 × 44) | S$2,600 salary = about S$13.64 per hour |
| Overtime hourly rate | Hourly basic rate × 1.5 | S$13.64 × 1.5 = about S$20.45 per hour |
| Overtime pay | Overtime hourly rate × overtime hours | 10 hours × S$20.45 = about S$204.55 |
Who can usually claim overtime pay?
Overtime claim eligibility depends on whether the employee is covered under the relevant part of the Employment Act. This calculator includes a simple coverage check based on common MOM salary thresholds.
| Employee Type | Common Salary Threshold | Calculator Treatment |
|---|---|---|
| Non-workman | Monthly basic salary of S$2,600 or less | Shown as likely covered if salary is within threshold |
| Workman | Monthly basic salary of S$4,500 or less | Shown as likely covered if salary is within threshold |
| Custom / company policy | Depends on contract or company policy | Calculator provides a general estimate only |
Overtime examples in Singapore
These examples assume a monthly-rated employee using 44 weekly working hours and 1.5× overtime rate.
| Monthly Basic Salary | Hourly Basic Rate | OT Rate | 10 Hours OT |
|---|---|---|---|
| S$1,800 | S$9.44 | S$14.16 | S$142 |
| S$2,000 | S$10.49 | S$15.73 | S$157 |
| S$2,600 | S$13.64 | S$20.45 | S$205 |
| S$3,000 | S$15.73 | S$23.60 | S$236 |
Overtime, rest days and public holidays
Overtime pay is different from rest day pay or public holiday pay. If you work on a rest day or public holiday, the calculation may involve additional rest day or public holiday pay on top of overtime for extra hours.
Normal overtime
Work beyond contractual hours on a normal working day is usually treated as overtime hours.
Rest day work
Work on a rest day may involve rest day pay rules. Extra hours beyond normal daily hours may also be overtime.
Public holiday work
Public holiday work may involve public holiday pay or time off, depending on the employment arrangement.
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Frequently Asked Questions
How is overtime pay calculated in Singapore?
Overtime pay is generally calculated as hourly basic rate of pay multiplied by 1.5, then multiplied by the number of overtime hours worked.
What is the hourly basic rate for a monthly-rated employee?
For a monthly-rated employee, the hourly basic rate is commonly calculated as (12 × monthly basic salary) divided by (52 × 44).
Who can claim overtime pay in Singapore?
Overtime claim eligibility depends on coverage under the Employment Act. Common thresholds include non-workmen earning monthly basic salary of S$2,600 or less, and workmen earning monthly basic salary of S$4,500 or less.
Is overtime always paid at 1.5 times?
For eligible overtime work, the standard rate is at least 1.5 times the hourly basic rate of pay. Some employers may provide better terms under contract or company policy.
Does basic salary include allowances for overtime calculation?
Basic rate of pay usually excludes overtime payments, bonuses, AWS and certain allowances. Check MOM guidance or your employment contract for specific treatment.
Is rest day work the same as overtime?
Not exactly. Rest day work may have separate rest day pay rules. Extra hours beyond normal daily hours on a rest day may also be treated as overtime.
Can I use this calculator for public holiday work?
This calculator is mainly for normal overtime. Public holiday work may involve public holiday pay or time off in addition to overtime for extra hours.
Is this overtime calculator official?
No. This calculator provides estimates only. For official overtime rules and calculations, check MOM directly.