Changing my work contract?
I assume you’re in the UK. If your hours are identified and set out in your employment contract, those hours cannot be varied save by consent. Imposition of longer hours is a repudiatory breach of contract by the employer entitling you to resign and claim unfair dismissal (assuming you’ve been employed for at least 12 months) Sometimes, contracts simply say “hours as required” – then they can be altered, but not increased, without consent. Your employer has no right to prevent you having a drink of water or coffee at any time, unless you’re a surgeon or something. Notwithstanding the earlier answer, you have (of course) the right to ask for ‘redundancy’ at any time, but a change of hours to unsuitable ones does not amount to a redundancy in law and therefore it might be a fairly futile request.