You may be able to opt back in at a later date. Your employer will help you with this.
Members who opt out can only choose to opt back in to the section of the scheme that they would have been in if they had not opted out. An opt in form must be completed and the option will take place from the next available pay period.
The Opting In form can be found on the member forms page.
Following the introduction of alpha from 1 April 2015, when a member chooses to opt back into the pension they may not be able to rejoin their previous scheme. Instead they may only be able to join the alpha scheme.
Please note: Under the automatic enrolment legislation, an employee is allowed to opt back into the CSP arrangements once in any 12-month period.