The formula
balance = hours worked − contracted hours
Where it comes from
Time recording exists because the gap between contracted and actual hours is almost never zero, and because half an hour a day goes unnoticed at the time but not in the annual total. Recording and adding up is the whole calculation; doing it every day is the hard part.
How to work it out by hand
- Note the hours actually worked each day, minus the lunch break
- Add them up for the week's total
- Subtract the hours your contract sets
- Multiply the result by 52 to see the effect over a year
What is worth knowing
The figure that changes the conversation is the annual one. Half an hour extra every day is 2.5 hours a week, 130 a year and a little over sixteen full working days: three weeks of work given away. It works the same in reverse, which is why keeping a record is worth it even when there is no dispute: it is the only way to know what is being discussed. Bear in mind that breaks which are not working time do not count, and that many agreements settle excess hours with time off rather than money.