I am currently pregnant with DC2. When I was on maternity leave in 2008 my annual bonus was pro ratad down to reflect full months worked and did not take into account the 2 weeks compulsory maternity leave. So instead of getting a bonus based on 37 weeks I got one based on 32 weeks. I have now raised this matter with HR using the Hoyland case as an example which says bonus payments must be made in the compulsory 2 week period and the Rights During Maternity leave document that states the bonus must be paid for time worked in the office and therefore should not be pro ratad down to reflect full months. HR have now said going forward the bonus will include the 2 week period and full time in the office. My question is are they legally obliged to pay me the 5 weeks extra I should have got in 2008. Can they pay me retrospectively for it ? Any advice welcome.