If you are a new parent and have a period of relevant child related leave the amount of pension you build up won't be affected.
Relevant child related leave covers all periods of Ordinary Maternity Leave, Ordinary Adoption Leave and Ordinary Paternity Leave and any paid Additional Maternity Leave, Additional Adoption Leave, Additional Paternity Leave and Neonatal Care Leave.
This means that if you have a period of reduced contractual pay or no pay during relevant child related leave your pension is still worked out using an average of your usual pensionable pay (before the reduction in pay took place). This is referred to as your Assumed Pensionable Pay (APP).
Unpaid child-related leave
You will only pay your contributions on any pay that you receive. If you decide to take a period of unpaid additional Maternity, Adoption (usually from week 39 to week 52), Paternity or Neonatal Care Leave you will not build up pension benefits. You can avoid this by paying buying back the lost pension if you return to work.
If you return to work following your unpaid leave your employer should write to you giving you the option of buying back the ‘lost pension’. If you elect to buy back the ‘lost pension’ within 30 days of returning to work you can pay Shared Cost Additional Pension Contributions (SCAPCs). By paying SCAPCs you only have to pay 1/3rd of the cost and your employer pays 2/3rds.
For more information on paying SCAPCs to buy back your 'lost' pension please contact your employer's payroll department directly.