Note that there are two circumstances where withdrawing from your RRSP does not reduce your contribution limit. (money.stackexchange.com)
But if you file jointly with a spouse who took retirement plan distributions, you may also have to reduce your contributions by those distributions when figuring the credit. (fairmark.com)
The alternative, portable pensions offered by insurance companies, would not force employers to contribute, and would allow individuals to opt out or reduce their contribution rates to match their needs. (canadianbusiness.com)