Last updated: September 15, 2026
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Overtime is one of the most frequently misunderstood parts of the South African payroll system. Employees often believe they are owed more than they receive, and employers often pay more or less than the law requires because nobody has checked the formula. The rules are set out in the Basic Conditions of Employment Act, and they are more specific than most people realise.
This guide explains who is entitled to overtime pay, how the rate is calculated, what the legal limits are, and how to work out an actual figure from a monthly salary. It also covers the common mistakes that lead to disputes.
Payslip disputes usually come down to what the contract says, so the employment contract template is worth checking against.
Who Is Entitled to Overtime Pay
Overtime pay is not universal. The Act applies to most employees, but there are significant exclusions. Employees who earn above a threshold set by the Minister of Employment and Labour are excluded from the provisions covering overtime, and so are certain categories such as senior managerial staff, travelling salespeople who regulate their own hours, and employees who work fewer than 24 hours a month.
For everyone else, the employer may not require an employee to work overtime except in accordance with an agreement. That agreement can be collective, or it can be an individual arrangement, but it must exist. This is an important protection: an employer cannot simply declare that everyone works late on a Friday and refuse to pay for it.
The Meaning of Ordinary Hours
Everything depends on the definition of ordinary hours of work. For most employees, ordinary hours are limited to 45 hours per week. If the employee works five days a week, the daily limit is nine hours. If the employee works more than five days a week, the daily limit is eight hours.
Any time worked beyond those ordinary hours is overtime. This is why the calculation begins with establishing the agreed ordinary hours, not with a rough sense of what a normal day looks like.
The Overtime Rate
The Act requires that overtime be paid at not less than one and a half times the employee’s normal rate. This is usually expressed as time and a half. The rate applies to each hour of overtime worked.
An employer and employee may agree to pay more than one and a half times, and many do. They may not agree to pay less. Any agreement that reduces the statutory minimum is invalid regardless of whether the employee signed it.
Calculating the Hourly Rate
To apply the rate, you first need an hourly rate. For an employee paid a monthly salary, the standard approach is to convert the monthly figure into a weekly figure and then divide by the ordinary weekly hours.
Take a monthly salary and multiply it by twelve to get an annual figure. Divide by fifty-two to get a weekly figure. Then divide by the ordinary weekly hours, which is usually 45 for a full-time employee. The result is the ordinary hourly rate.
For example, an employee earning a monthly salary of 15,000 rand has an annual salary of 180,000 rand. Divided by fifty-two weeks, that is approximately 3,461 rand per week. Divided by 45 ordinary hours, the ordinary hourly rate is approximately 76 rand 92 cents. The overtime rate is one and a half times that, or roughly 115 rand 38 cents per hour.
The Alternative Monthly Formula
A simpler approach that many payroll administrators use is to divide the monthly salary by the standard monthly hours. This is calculated as 45 hours multiplied by 52 weeks divided by 12 months, which comes to 195 hours per month. Dividing a monthly salary by 195 gives the hourly rate directly.
Using the same 15,000 rand example, dividing by 195 gives approximately 76 rand 92 cents per hour, matching the longer calculation. Either method is acceptable as long as it is applied consistently.
Public Holidays and Sundays
Separate rules apply to work performed on a public holiday and, in some circumstances, on a Sunday. Work on a public holiday is generally paid at double the normal rate, unless the employee ordinarily works on that day as part of their normal roster, in which case different provisions apply.
Sundays attract a higher rate for employees who do not ordinarily work on a Sunday. The rate is generally double the ordinary rate where Sunday work is not part of the employee’s normal hours. Employees who ordinarily work on Sundays have these hours built into their ordinary hours and are paid at the normal rate for them.
Night Work
Night work, generally between six in the evening and six in the morning, carries additional obligations. Employees who work at night must be compensated by an allowance or by a reduction in working hours, and transport must be available between the employee’s place of residence and the workplace at the start and end of a night shift.
Night work overtime is uncommon as a concept because night workers usually have the hours structured into their ordinary schedule. Where it does occur, the overtime provisions apply on top of the night work arrangements.
The Legal Limits on Overtime
Overtime is capped. An employee may not work more than ten hours of overtime in any week, and the total of ordinary hours plus overtime may not exceed fifteen hours in any day. These limits exist to protect health and safety, and they apply regardless of what the employee is willing to do.
There is a further constraint expressed over a longer period. Overtime may not exceed the limits set out in the Act when averaged over a period of up to four months, if a collective agreement provides for averaging. Averaging is a mechanism that allows a seasonal surge to be balanced against quieter weeks, but it cannot be used to evade the weekly ceiling entirely.
Rest Periods
An employee must receive a daily rest period of at least twelve consecutive hours between the end of one shift and the start of the next, and a weekly rest period of at least 36 consecutive hours. Overtime cannot be scheduled in a way that erodes these periods.
This becomes relevant when an employee is asked to work late and then start early the next morning. If the gap falls below twelve hours, the arrangement breaches the Act even if the overtime itself is paid correctly. Meal intervals also apply: an employee who works continuously for more than five hours is entitled to a meal interval of at least one hour.
Working Out a Real Example
Consider an employee with ordinary hours of nine per day from Monday to Friday, a monthly salary of 18,000 rand, and a requirement to work two extra hours on three evenings in a week, plus four hours on a Saturday morning. Saturday is not an ordinary working day for this employee.
The hourly rate is 18,000 divided by 195, which is approximately 92 rand 31 cents. The six hours worked on weekday evenings are ordinary overtime at one and a half times the rate, giving 138 rand 46 cents per hour, for a total of approximately 830 rand 77 cents.
The four hours on Saturday are worked on a day that is not an ordinary working day. Saturday is not a Sunday or a public holiday, so it is treated as ordinary overtime, giving four hours at 138 rand 46 cents, or approximately 553 rand 85 cents. The total overtime payment for the week is approximately 1,384 rand 62 cents.
When the Employee Is Paid Daily or Weekly
Employees paid by the day or by the week need a slightly different route to the hourly rate. A weekly wage is divided by the ordinary weekly hours to give the hourly rate. A daily wage is divided by the ordinary daily hours.
The principle is unchanged: establish the ordinary hourly rate from whatever basis the employee is paid on, then apply one and a half times to that figure for overtime hours.
Common Mistakes
Several errors appear repeatedly in South African payroll. The most frequent is using the wrong hourly divisor, which produces a rate that is consistently slightly too low or too high. The figure of 195 hours per month is the standard for a 45-hour week, and substituting an arbitrary number such as 160 distorts every calculation.
Another common error is failing to identify the correct ordinary hours. If a contract sets out 40 ordinary hours per week rather than 45, the hourly rate is higher and the overtime payment rises accordingly. Employers who use a blanket 45-hour assumption when the contract says otherwise are underpaying.
Treating Fixed Overtime as Included
Some contracts state that a salary includes a fixed amount of overtime. This can be lawful if the arrangement is properly structured and the employee is genuinely compensated for the hours worked, but it cannot be used to pay less than the statutory minimum for the hours actually worked.
When a salary includes a regular overtime component, the agreement should specify how many hours are covered and what happens beyond that number. Vague arrangements are exactly the kind that end up in the Commission for Conciliation, Mediation and Arbitration.
Forgetting to Record Hours
The obligation to keep records of hours worked rests with the employer. Without records, an employer cannot demonstrate compliance, and in a dispute the absence of records generally counts against them. Time registers, electronic clocking, or a simple signed weekly sheet all serve the purpose.
Employees should keep their own record as well. A note of start and finish times each day provides a reliable basis for checking a payslip and is invaluable if a query arises months later.
Using the SumZA Overtime Calculator
Working through the conversion from a monthly salary to an hourly rate and then applying the overtime multiple is straightforward once, and tedious every time. The SumZA overtime calculator performs the conversion and the multiplication for you, allowing you to enter a monthly, weekly, or daily figure and read off the overtime rate directly.
It handles the standard time-and-a-half multiple by default and lets you test higher rates where an agreement provides for them. For anyone checking a payslip or preparing a payroll run, it removes the arithmetic risk that produces most disputes.
Getting Overtime Right
Overtime pay is governed by clear rules: identify the ordinary hours, convert the salary into an hourly rate using the correct divisor, apply at least one and a half times the rate, observe the weekly and daily ceilings, and keep records of what was actually worked.
Employers who follow those steps pay correctly and have evidence to show it. Employees who understand them can check their own payslips and raise a question early, while the details are still fresh. On both sides, the arithmetic is the easy part once the definitions are clear.