12 NORTHERN COLLEGE OF APPLIED ARTS AND TECHNOLOGY Notes to Financial Statements Years ended March 31, 2013 and March 31, 2012 5. Accounts pay a ble and accrued liabilities: March 31, March 31, April 1, 2013 2012 2011 Trade and other $ 2,057,288 $ 2,837,185 $ 2,849,965 Payroll related liabilities 709,473 807,298 880,678 $ 2,766,761 $ 3,644,483 $ 3,730,643 6. Employ ment related obligations: March 31, March 31, April 1, 2013 2012 2011 Vacation and leave payable $ 2,058,917 $ 2,144,945 $ 2,113,565 Non-pension post-employment obligations $ 383,000 $ 364,000 $ 360,000 Sick leave benefits - vesting 267,000 342,000 477,000 - non-vesting 1,011,000 1,052,000 1,105,000 $ 1,661,000 $ 1,758,000 $ 1,942,000 Vacation The accrual for vacation represents the liab ility for earned but unpaid vacation entitlements and paid leaves. Employ ee Future Benefits Vesting Sick Leave: The College has provided for vesting sick leave benefits during the year. Eligible employees, after 10 years of service, are entitled to rece ive 50% of their accumu lated sick leave credit on termination or retirement to a maximum of 6 m onths’ salary. The program to accumulate sick leave credits ceased for employees hired afte r March 31, 1991. The related benefit liability was determined by independent actuaries on behalf of the College System as a whole.