More stick than carrot on the horizon - https://www.theepochtimes.com/companies-now-deducting-50-from-unvaccinated-workers-monthly-paychecks-consultancy-firm_3940800.html

Some employers are starting to tack on a $20 to $50 monthly surcharge to their unvaccinated workers, according to a health benefits consultant group.

It starts with an "honors system", but it'll bleed into more if you play by their rules. On last point, see some perspectives in https://kotakuinaction2.win/p/12jdEGlr5W/company-vaccine-mandates-what-ar/ as well.