This depends on the nature of the change they want to make and the way in which the contract of employment is drafted. It is not usual for important terms such as rates of pay, working hours and job titles to be changed without the employee specifically agreeing to it.
In certain cases, you should consider what the alternative is if you do not agree. For example, if the business is in trouble and changes are required in order to avoid dismissals, any unreasonable refusal to agree to changes may give the employer scope to make dismissals that a tribunal would find to be fair.
Please see our Employment section.
Posted in: Employment