When employment hours change or someone works part time, calculating the right proportion
of a full time salary can be confusing, especially when weekly hours or working weeks
differ. A useful reference is
https://proratasalarycalculators.com/ which lets you work
from the full time equivalent salary and actual hours or days, while also providing
annual, monthly, weekly, hourly, and daily figures. It can be a handy way to double check
the numbers before comparing a contract or payslip.