An employee can access the salary sacrifice scheme for as long as needed, but needs to be aware of the implications of belonging to the scheme.
Under a salary sacrifice scheme, an employee’s contract is amended to make it clear that the parent is entitled to a lower taxable salary, in return for the equivalent amount being paid in childcare vouchers.
The employee may not retain the right to return to the previous level of salary within the terms of their contract, so ideally the change would be for a specific period of time, say for one year, or until the child reaches a certain age. This is written into the contract, and during that time the employee cannot return to their previous salary.