The message from many companies to their office workers is clear. It will soon be time to shed the slippers for hard shoes and return to your desk. But many companies are still puzzling over a single quandary: What to do about vaccines. Should they require employees to get them? Encourage or cajole or bribe them?

“We’re all kind of, you know, flying by the seat of our pants,” said Wayne Wager, the chief executive of Remote Medical International, a consulting firm in Seattle that is helping companies that are reopening offices. Mr. Wager said his own company had not decided what to do yet, but would probably demand that anyone coming back be vaccinated.