David Gross, an executive at a New York-based advertising agency, convened the troops over Zoom this month to deliver a message he and his fellow partners were eager to share: It was time to think about coming back to the office.Mr. Gross, 40, wasn’t sure how employees, many in their 20s and early 30s, would take it. The initial response — dead silence — wasn’t encouraging. Then one young man signaled he had a question. “Is the policy mandatory?” he wanted to know.Yes, it is mandatory, for three days a week, he was told.Thus began a tricky conversation …
