Can businesses require proof of vaccination? Experts say yes

As companies rush to develop so-called "vaccine passports" and as access to COVID-19 vaccines expands, the debate about whether businesses can require proof of vaccination from employees and patrons is heating up.

And Americans' support for requiring proof of vaccination depends on which activity the proof would be needed for, according to exclusive polling.  Tech companies, including IBM, Microsoft and Oracle, have been working on vaccine credentials that can be flashed at ball games, concerts and airports for entry, and some businesses are wondering whether they can or should require employees to show proof of vaccination before returning to work sites. The Equal Employment Opportunity Commission has already weighed in, holding that, "generally," employers have the right to require their employees to get one of the approved vaccines.