Business travel is expected to increase significantly during the second half of 2021, although it will be lower than 2019 levels, according to recent survey findings from Deloitte. But employers are still tentative about asking employees to go on work trips, Deloitte noted in its report, released in August.

“Many companies still require extra layers of approval for corporate trips, and travel volume has only grown slightly from the end of 2020,” the report said. “International travel remains all but prohibitive, with quarantine on arrival required in many countries regardless of vaccination status.”

Deloitte projected most companies will stop requiring executive approval for domestic business trips during the first two quarters of 2022. Others are taking a different approach. At Volkswagen AG, internal booking software steers employees toward alternatives to flying and they are asked to justify traveling rather than conducting business online, Bloomberg reported. Ford is requiring employees who go on international business travel to be vaccinated, according to NBC News.