Can employers take disability and maternity-related absence into account when calculating an individual’s bonus payments?

We run a performance-related bonus scheme for all employees based on employee attendance as well as company performance, effectively a profit-share scheme for all staff. Absences are taken into account. So if you don't join the company until the 1st of July, you may only receive or earn 50% of any achievable bonus. Or if you leave before the end of the year, you might receive zero bonus. You have to be employed at the time the bonus is calculated.

Or — and this is the important part — if you are sick or on maternity leave or a career break, all of those days are discounted for bonus purposes. I.e., if you're absent for three months of the bonus year, you may only receive three-quarters of