My biggest preoccupation is that we actually wait and let the markets tell us. We have this fairly stable workforce. They tend to come in, spend their careers, and they leave. We know their pattern of movement. So why do we wait until they're out the door to start bringing in people? It may mean some greater investment in bringing some groups in a little more. That's the kind of thing we have to do; we don't wait until you have the situation you're describing.
Evidence of meeting #42 for Government Operations and Estimates in the 39th Parliament, 1st session. (The original version is on Parliament’s site, as are the minutes.) The winning word was numbers.
A recording is available from Parliament.