approach. The most appropriate approach used to measure value in use depends on the nature of the impairment and availability of information. If an asset’s carrying amount exceeds its recoverable service amount, the asset is regarded as impaired and the carrying amount is written-down to the recoverable amount. The total impairment loss is recognised in the surplus or deficit in the statement of comprehensive revenue and expense. The reversal of an impairment loss is also recognised in the surplus or deficit in the statement of comprehensive revenue and expense. Intangible assets that have an indefinite useful life are not subject to amortisation and are tested annually for impairment. An intangible asset that is not yet available for use at the balance date is tested for impairment annually. calculated on an actuarial basis. The calculations are based on: 1 likely future entitlements accruing to staff, based on years of service, years to entitlement, the likelihood that staff will reach the point of entitlement, and contractual entitlements information and 2 the present value of the estimated future cash flows. Presentation of employee entitlements Accrued salaries and wages, bonuses, annual leave and vested long service leave are classified as a current liability. Non-vested long service leave and retirement leave expected to be settled within 12 months of balance date are classified as a current liability. All other employee entitlements are classified as a non-current liability. Payables Short-term payables are recorded at their face value. Superannuation schemes Defined contribution schemes Employee entitlements Short-term employee entitlements Employee benefits that are due to be settled within 12 months after the end of the period in which the employee renders the related service are measured based on accrued entitlements at current rates of pay. These include salaries and wages accrued up to balance date and annual leave earned but not yet taken at balance date. A liability and an expense are recognised for bonuses where there is a contractual obligation or where there is a past practice that has created a constructive obligation and a reliable estimate of the obligation can be made. Permanent employees are entitled to actual and reasonable sick leave to recover from genuine illness but entitlements do not accumulate and are recognised as an expense when the absence occurs. Long-term employee entitlements Employee benefits that are due to be settled beyond 12 months after the end of the period in which the employee renders the related service, such as long service leave and retirement leave, have been Annual Report 2016 Obligations for contributions to KiwiSaver and the Government Superannuation Fund are accounted for as defined contribution schemes and are recognised as an expense in the surplus or deficit in the statement of comprehensive revenue and expense as incurred. Defined benefit schemes The Commission does not make contributions to defined benefit schemes. Provisions A provision is recognised for future expenditure of an uncertain amount or timing when there is a present obligation (either legal or constructive) as a result of a past event, it is probable that an outflow of future economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. Provisions are measured at the present value of the expenditure expected to be required to settle the obligation using a discount rate that reflects current market assessments of the time value of money and 53