Once again, I fail to see how. It is none of their business whether you decide to work or not as long as you are legally declaring any income that you make. 

After all, they are trying to encourage baby boomers to remain in the work force. This would be  a detriment. However I have to admit that Trudeau is sending out very mixed messages on immigrants so they could be confused as to where they are going on senior's benefits as well.