Walmart, Disney Get Tough on Unvaccinated Staff Amid Delta Surge

America’s corporate giants began ratcheting up the pressure on unvaccinated employees, aiming to turn the tide against a resurgent virus that threatens the economic recovery.

Walmart Inc., the largest private employer in the U.S., is requiring headquarters and regional staff to be vaccinated by Oct. 4, instituting a policy that may set a standard for corporate America as the highly contagious delta variant continues to spread. Walt Disney Co. issued a similar mandate of its own.

“The pandemic is not over, and the delta variant has led to an increase in infection rates across much of the U.S.,” Walmart ...