Problem: In Year 1, Zelman made amendments to its pension plan. As a result, the company incurred $400,000 past service costs. Under the pension plan, there © 2022 Post University, Waterbury, CT ALL RIGHTS RESERVED are 200 active employees with an average expected remaining working life of 10 years and no retirees. a) Compute the amount of past service costs treated in Year 1 and subsequent years under (1) U.S. GAAP and (2) IFRS.