Track overtime by comparing contracted weekly hours with hours worked.
Enter your contracted hours per week and the hours you actually worked. The calculator subtracts contract hours from worked hours: a positive result is overtime above your contract, a negative result means you worked under contract, and zero means you landed exactly on your contracted hours.
Run this at the end of each week with that week's worked hours to build a running picture of how much overtime you're accumulating. If your contract or employer tracks overtime pay or time-off-in-lieu, keep a note of each week's result alongside your own records, since this page doesn't save history between visits.
Not every contract counts overtime on a strict weekly basis. Some employment contracts and collective agreements (CAOs) use a reference period spanning several weeks, and only count overtime once the average across that whole period exceeds contracted hours — meaning a single heavy week can be fully offset by a quieter week later in the same period. If your contract works this way, run this calculator once for each individual week, then add the results together (or average them) across the full reference period instead of judging a single week in isolation.
No, it only compares the two numbers you enter. If a public holiday reduced your contracted hours for the week, adjust the contract hours figure to match before comparing.
Use your average contracted hours for the period you're checking, or run the calculator per pay period instead of per week if that matches your contract better.
No, it only calculates the number of overtime hours. Multiply that by your overtime rate separately if you need a pay figure.
Run the calculator once per individual week using that week's contract and worked hours, then add up the results across the full averaging period yourself. Some contracts and collective agreements only count overtime once the average across several weeks exceeds contracted hours, so a single high week isn't necessarily "real" overtime if a slower week follows in the same period.