Changing an employment contract

When changes are agreed

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Changes can be agreed verbally or in writing.

Agreed changes do not always have to be in writing, but it's a good idea to prevent any misunderstandings. It can also help to say when changes will take effect.

When changes must be in writing

If a change relates to anything that must legally be in the employee’s written terms ('written statement of employment particulars'), the employer must notify the employee of the change in writing within a month of the change taking effect.

For example, the employer should do this if the change relates to: 

  • the job title 
  • the job description 
  • the job location 
  • pay 
  • working hours 
  • holiday entitlement 
  • changes to collective agreements with a trade union 

Written terms provided before 6 April 2020

If the employee's written terms were provided before 6 April 2020 and need to change, the employer must give all the following in writing to the employee:

Please tell us why the information did not help

Select the statement you most agree with:

Please do not include any personal information, for example email address or phone number. Unfortunately we cannot respond to individual requests for information. If you need help, call our helpline on 0300 123 1190