IAMAW Multi-Employer Pension Plan (Canada) WELCOME TO THE I.A.M M.E.P.P. Click Here The IAM multi-employer pension plan (MEPP registered July 23rd 2013) is run by labour and management trustees that give IAM MEPP locals a low-cost alternative to a single-employer defined benefit plan or an RRSP. The IAM Plan provide a defined benefit pension based on negotiated contribution rates.