Methodology
How this calculator works
The hourly basic rate is calculated as 12 times monthly basic salary divided by 52 weeks and 44 hours. Eligible overtime is then estimated at 1.5 times that hourly basic rate for each overtime hour.
Estimate overtime pay from monthly basic salary and overtime hours.
Advanced overtime planning
Uses the monthly-rated hourly-rate approach with a default 44-hour week. Eligibility under Part 4 of the Employment Act depends on role and salary.
Estimated overtime pay
$0.00
Methodology
The hourly basic rate is calculated as 12 times monthly basic salary divided by 52 weeks and 44 hours. Eligible overtime is then estimated at 1.5 times that hourly basic rate for each overtime hour.
Worked example
For S$2,400 monthly basic salary, the hourly basic rate is about S$12.59. Ten overtime hours at 1.5 times that rate produce an estimate of about S$188.81.
Accuracy checklist
Common questions
No. Part 4 coverage depends on the employee's role and basic monthly salary.
No. The MOM formula uses monthly basic salary for an eligible monthly-rated employee.
The estimate uses at least 1.5 times the hourly basic rate.
Author: Ezivo Calculator. Reviewed by: Ezivo Calculator technical QA. Primary reference: Singapore Ministry of Manpower — overtime pay calculator and eligibility. Rules reviewed 24 October 2026.
Rule period: Current published rules within the page’s stated period and scope
Next scheduled review: 15 December 2026
The implemented rates, thresholds, displayed scope and representative boundary behaviour were reviewed against the primary source linked on the page.
Monthly-rated employees covered by Part 4 of the Employment Act. Eligibility depends on job type and basic salary; allowances, rest days, public holidays and non-standard contractual hours are excluded. This calculator provides general information and a planning estimate, not financial, tax, legal or professional advice.