Yep! And every employer that has offered has had some kind of match.

I've rolled all my 401ks over with each new job.

I also have an IRA from money I saved towards retirement while working in Canada for 18 months. I took the tax penalty up front since I'll probably be US based for majority of my life. But I did earn a match while working in Canada.

Current employer gives 4% fully vested.

Contributing 20% of income at the moment (30 to) and hoping to retire before 60.