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The office of Rover.com sits empty with employees working from home due to the coronavirus pandemic on March 12 in Seattle, Washington

The vaccines are on their way. So far, they appear so effective that Dr. Anthony Fauci even thinks we may have packed stadiums return in the summer of 2021.

That also means more employers will begin to reopen their offices—and we'll get to see to what degree WFH sticks around.

To get an eye on the future of work, Future Forum by Slack conducted a three-month survey of over 9,000 knowledge workers or skilled office workers around the world—something they used to build their Remote Employee Experience Index. Future Forum by Slack gave Fortune Analytics exclusive access to that raw data.*

Here's what we found.

The numbers to know

27%

48%

43%

33%

The big picture

Workers are split on returning to the office. Around 3 in 10 workers would never or rarely want to return to the office, while 4 in 10 would like to go back to the old normal. We should expect a mixed approach from employers, tailoring new work policies based on how their staff works best. Simply put: The future of work won't look like fully packed offices nor a wasteland of empty buildings.

A few deeper takeaways

1. Older workers prefer WFH the most.

This isn't the '90s: Older workers are damn good at digital communication. And these employees aged 55 to 64 are the most likely to say they'd prefer to never work from the office, with 17% of them indicating so.