DH employers hold annual salary reviews & often amend pay schemes as he is in a sales based role (management level). They revealed a new pay scheme about 2 months ago which was rubbish compared to existing one. It was not only extremely confusing (lots of different components to it) but also meant that DH would earn less for same work (hitting target). His Manager (who wasn't on board that decided new pay scheme) said it was terrible scheme & that he didn't think they were allowed to pay you less for the same or more work. So the pay scheme went back to the drawing board as so many complaints were received. However, today DH has received an email from HR stating first draft of the pay scheme has actually been approved & they are backdating it to start 1/3/15. Can they do this, as far as my DH was concerned during March he was working under 'old' pay scheme & as a result under the new scheme he will earn £3k less in March than he thought!! This seems wrong! Thank you