When changes are agreed
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
- 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:
- any changes to the existing written terms
- extra information required for new written terms from 6 April 2020