There are some state benefits that are earnings-related, i.e. based on an individual’s level of earnings.
Earnings-related benefits include:
Any amount of an individual’s earnings which are sacrificed in return for a NICs exempt benefit such as childcare vouchers will not be included as part of the earnings for the purposes of calculating earnings-related benefits. Furthermore, if taxable earnings are reduced to below the Lower Earnings Limit, the entitlement to earnings related benefits would also be reduced.