My employer wants me to work extra hours in excess of those set out in my contract of employment. Should I have to work them?

The written statement of particulars of employment, which should be given to employees within eight weeks of starting work, should include "details of terms and conditions of employment relating to hours of work and normal working hours".

In order to avoid confusion and misunderstanding normal hours should be specified. Sometimes the employer may wish to retain some flexibility and require you at other times according to the needs of the company. Such a requirement may be stated, but employers can also rely on common law, which lays a duty on employees to work some overtime. However, the requirement to work extra hours must be reasonable and would still be subject to the limits imposed by the Working Time Regulations.

If you are having problems with unwanted overtime you should speak to your manager if you feel that you can. You should also take advice from your union if you have one.