The formula
value per hour = annual income ÷ hours worked a year
Where it comes from
The calculation runs on hours actually worked, with holidays taken out. The second figure adds commuting time, which is not paid but is given to the job: that is why the real hour is always worth less than the nominal one.
How to work it out by hand
- Subtract your holiday weeks from the 52 in the year
- Multiply by your weekly hours
- Divide your annual income by that total
What is worth knowing
The practical use of this number is deciding what to hand over. If your hour is worth 16 and cleaning the house takes three hours, paying 40 for a cleaner comes out ahead in pure time terms. The calculation has an obvious limit: it only works if the freed-up hours genuinely turn into income or into rest you value, not if they simply fill with something else.