For the last 10 years I've worked compressed hours over a four day week which has worked extremely well in regard to my work life balance .
My new manager has now said that as this was never formally agreed they no longer have to honour this and are therefore looking to change my working pattern to 5 days -they've not reasoned this as a business need more the fact that they can so they will ! I've been given the impression that they plan to do this without notice and consultation.
Can they legally do this or have my working hours become 'custom and practice' and now form part of my contract because I've had the same working pattern for so long ?
If it makes any difference I work for the nhs so have a generic contract but have worked the same hours which were agreed when I started in this role .