Up here in Canada not all procedures are insured, Pharma, Vision & Dental are the big three that most either pay out of pocket or purchase extended insurance for - though there are generally pretty good provincial programs to help with the costs of those. However, nobody is walking around in Canada concerned that they may get fired and then be bankrupted by a heart attack.

Companies absolutely do still bear a significant per-employee cost to support provincial healthcare and residents do need to pay a pretty light fee into a pool (with options available for financial assistance).

The end result is that companies do end up bearing pretty heavy burdens on a per-employee basis - but employees don't end up with as much of a burden forcing them to remain in undesireable employment positions, though some guaranteed income would really free up employees to have a more equal amount of power in the job market.