It doesn't touch on expulsion, so you're asking me a question that has nothing to do with the bill.
Under the law right now, in either house, if you quit before you're expelled, you can hold onto your pension, which is precisely what Lavigne did. This bill would close that loophole. If you're found guilty, whether you're thrown out or not, whether you quit or not, you lose the taxpayer top-up of your pension.