b'A N N U A L R E P O R T 2 0 1 7 - 2 0 1 8NOTES TO THE SPECIAL PURPOSE FINANCIAL STATEMENTSFOR THE YEAR ENDED 30 JUNE 2018(Expressed in Trinidad and Tobago Dollars)15.Other liabilities 20182017$000$000Sundry creditors and accruals76,453116,868Provision for other payables 17,491 12,314 93,944 129,18216.Post-employment benefitThe amounts recognised in the statement of financial position are as follows:20182017$000$000Net liability in statement of financial positionPresent value of defined benefit obligation967,372960,938Fair value of assets(973,908)(949,804)(Surplus)/deficit(6,536)11,134Effect of asset ceilingNet defined benefit (asset)/liability(6,536) 11,134Movement in present value of defined benefit obligationDefined benefit obligation at start of year 960,938933,290Current service cost 21,41024,222Interest cost 51,78350,197Members contributions 6,7354,112Past service costRe-measurements -Experience adjustments(34,099)(9,076) -Actuarial (gains)/losses from changes in demographic assumptions -Actuarial gains from change in financial ass umptionsBenefits paid(39,395)(41,807)Defined benefit obligation at end of year967,372 960,938The defined benefit obligation is allocated between the Plans members as follows:20182017Active54%54%Deferred members1%1%Pensioners45%45%The weighted average duration of the defined benefit obligation 15.6 years.97% of the value of the benefits for active members is vested. 24% of the defined benefit obligation for active members is conditional on future salary increases.58'