Is my employer allowed to change my Contract/Terms and Conditions?
Your employer can only change your contract terms if you agree.
If your employer tries to force upon you new terms which you do not accept, you must take immediate steps to protect your interests by lodging a grievance with the employer and notifying your Usdaw representative. Changes which you have not agreed and which result in a cut in pay may be an unlawful deduction from wages. Changes in hours or shift patterns which are particularly hard for women with families to manage may be indirect sex discrimination. Changes which you have not agreed may be a breach of contract.
When any of these main terms are changed, your employer must provide written notice of the change within a month. Check any such notice carefully.