What this calculator does
It turns a month of extra hours into the amount the payslip must show. Overtime in South Africa is not one rate: weekday and Saturday hours beyond ordinary time are paid at 1.5 times, Sunday hours at double (or 1.5 times when Sunday is an ordinary working day for that employee), and public holiday hours at double. All three start from the same number, the ordinary hourly rate, and that is where most payslips go wrong.
BCEA s35 and s10
monthly × 12 ÷ 52 ÷ weekly hours = hourly · hourly × 1.5 × overtime hours = overtime pay
The divisor is the whole argument
A 40-hour contract divides the weekly rate by 40; a 45-hour contract by 45. Payroll that uses 195 hours a month for everyone underpays the 40-hour employee’s overtime by about 11% every month. The calculator takes the pattern per employee, which is why it asks for days and hours before it asks for the salary.
Worked example: R15,000 a month, 45-hour week, 8 overtime hours and 4 Sunday hours
| Weekly rate | R15,000 × 12 ÷ 52 | R3,461.54 |
| Hourly rate | R3,461.54 ÷ 45 | R76.92 |
| Overtime | 8 × R76.92 × 1.5 | R923.08 |
| Sunday (not a usual day) | 4 × R76.92 × 2 | R615.38 |
| Premium pay this month | R923.08 + R615.38 | R1,538.46 |
Five cases, with numbers
Everyone’s case is different. These are the ones people ask about, on R15,000 a month and a 45-hour week (R76.92 an hour).
- 5 hours on a Tuesday night, 18:00 to 23:00: 5 × R76.92 × 1.5 = R576.92 overtime, plus the section 17 night allowance or shorter hours the contract sets, and transport home.
- 5 hours on a Saturday, Monday-to-Friday employee: overtime at 1.5 times, R576.92. Saturday is not a Sunday.
- 5 hours on a Sunday, not a usual Sunday worker: double, R769.23. If double works out below the daily wage (R692.31), pay the daily wage (s16(2)).
- 5 hours on Freedom Day, an ordinary working day: the greater of double the day (R1,384.62) or the day plus the hours (R1,076.92): R1,384.62 (s18(2)).
- Same hours on R24,000 a month: above the threshold; the contract decides, and if it is silent nothing is owed.
What the Act requires around the number
- Agreement. Overtime may only be worked in terms of an agreement (s10(1)); one made in the first three months lapses after a year (s10(1A)).
- Limits. Three hours a day, ten a week, or 15 by collective agreement for two months in a year (s10(1), (6)).
- Time off instead. 90 minutes’ paid time off per overtime hour, or pay plus 30 minutes off, within a month (s10(3), (4)).
- Records. Hours worked and pay, kept for three years (s31). An overtime claim at the CCMA is decided on them.
The rules in full, with the earnings threshold and the Sunday and public holiday tables, are in the overtime guide. The hours themselves come from a roster and a clock: the timesheets feature records them against the limits.
The whole method in one block - copy it for your accountant, your records, or an AI assistant
SOUTH AFRICAN OVERTIME PAY - THE STATUTORY METHOD (BCEA) ORDINARY HOURLY RATE Weekly rate = monthly remuneration x 12 / 52 (BCEA s35(4)) Hourly rate = weekly rate / ordinary weekly hours (max 45, s9) PREMIUM RATES Overtime (s10(2)) ................ 1.5 x hourly. By agreement; 3 h/day, 10 h/week cap (15 by collective agreement, 2 months a year). Sunday, not ordinarily (s16(1)) .. 2.0 x hourly, and at least the ordinary daily wage. Sunday, ordinarily (s16(1)) ...... 1.5 x hourly. Public holiday worked (s18(2)) ... at least 2 x the ordinary pay for the day. Time off instead (s10(3)) ........ 90 minutes paid time off per overtime hour, or pay + 30 minutes. WHO IS OUTSIDE s10, s16, s18(3) Earnings above R269,600.90 a year (R22,466.74 a month) from 1 May 2026; senior managers; travelling sales staff who set their own hours; employees working under 24 hours a month. WORKED EXAMPLE R15,000/month, 5-day week, 9 ordinary hours a day (45 a week): Weekly: 15,000 x 12 / 52 = R3,461.54 Hourly: 3,461.54 / 45 = R76.92 8 overtime hours: 8 x 76.92 x 1.5 = R923.08 4 Sunday hours (not usual): 4 x 76.92 x 2 = R615.38 Premium pay this month: R1,538.46 Source: Synthro - Overtime Calculator (South Africa) https://www.synthro.io/tools/overtime-calculator-south-africa Figures reviewed October 2026 against the BCEA and the 1 May 2026 earnings threshold.
About this calculator
Built on BCEA sections 35(4), 9, 10, 16 and 18 and the earnings threshold of R269,600.90 a year from 1 May 2026 (Government Notice 7384). It computes the statutory minimum; a contract, a sectoral determination or a bargaining council agreement can set a higher rate, never a lower one. A calculation tool, not legal advice.
