Probably the best answer is that I don’t know. Of the small number I’ve kept up with (including one who tried to make the move internally where I work) they’ve kept doing whatever they were doing before they sought to switch. For all I know all the others became rodeo clowns or investment bankers (or both).
Some speculation: Like most professions, becoming an actuary is a big investment. However, in the US – and unlike most other professions here – most of that investment occurs while you’re on the job. With the exception of a small number of actuarial science majors that graduate here each year, most entry level candidates for actuarial work are no more qualified to be actuaries than anything else (or even less, if they’re a career changer). So they likely stay with whatever they were doing, move to another career common for math majors (statistics, data analytics, teaching etc), or choose another profession entirely and head back to school. They don’t usually stay in touch through message boards or otherwise. I think this is different than, say, physics or internal medicine or law, where there is a big investment that keeps them connected to the field for some time.
I believe you when you say there are job postings for entry level candidates in Canada. However, I’d be very surprised if that actually reflected a thawing of the job market over there. My understanding (based on posts from and conversations with candidates, employers and recruiters) is that it is very competitive up there. A few good universities produce large numbers of job seekers with several exams under their belt. Hearsay suggests that companies haven’t been able to absorb the glut. Hearsay is hearsay, I guess, but the comments from recruiters aren’t ambiguous.
I’ll stress my usual disclaimer again: a saturated marketplace just means you have to be better to get a job. If you’re already awesome, then it really doesn’t have much impact on you.