Help needed, employment lawyers and/or HR experts please

[ThreadKilla]

Hope someone can help, DH took on an additional role last year in addition to his existing role, a promotion so to speak and a pay increase was agreed, he was told the first half would arrive in X month (which it did) and the second in X month due to fiscal year bollocks... Anyway for months he's constantly being fobbed off for the second half and after another meeting with his new boss today there is still no second half, lots of bs basically. He is still working his ass off doing 2 roles managing huge budgets and lots of people!

Where does he stand on this? Is this allowed? Should he take this to HR? This is a large organisation. Any advise is much appreciated thank you.

Does he have it in writing?

Yes in emails, but mostly verbally thanks

Ok if he has written (email is fine) confirmation of his promotion, pay increase and dates it was due, and verbal requests haven't worked, he could consider either raising a formal grievance, or speaking to HR first. He will probably want to consider company dynamics, whether he has a relationship with HR, etc first before deciding which is best.

But a promotion and pay increase are changes to his contract, so if he has written confirmation of the changes but the pay rise has not been implemented within the stated timescale, that's a breach of contract.

Thank you