If a PSA has been entered into either you or the employer can
vary the agreement, any variation of the terms of a PSA must be
made on or before the 6 July following the year to which it
relates.
Where changes are required both parties must agree these in
writing, a form P627 should be used for this purpose.
The effective date of the variation is the date of issue of
the P627 or your letter to the employer agreeing the changes.
