Everyone's vision of life in retirement is different. The peace of mind of lifetime income and survivor benefits that your OMERS pension delivers may be all you need for retirement. If you are looking for more, Additional Voluntary Contributions (AVCs) could be for you.
Similar to RRSPs in some ways, AVCs are administered as part of the OMERS Primary Pension Plan but separate from your OMERS defined benefit pension. Funds in an AVC account are invested in the OMERS Fund, a globally diversified portfolio, which provided a 9.5% net rate of return in 2012.