Apple has suspended its requirement that employees return to the office this month for at least three days a week because of a resurgence of Covid-19 cases.

Thousands of employees who fought back against the company's demand that they come to the office three days a week in late May were happy with the reversal. The group, which calls itself Apple Together, published a letter calling on the executive team to allow for a hybrid and flexible work schedule, saying they could collaborate remotely using online tools.

Ian Goodfellow resigned from Apple because of the office return policy. Mr. Goodfellow didn't reply immediately to requests for comment.

In a note to employees on Tuesday, Apple said that it would pilot a program to bring some workers back to the office twice a week. Anyone in that program who felt uncomfortable coming into the office would have the option to work remotely.

Employees who come to campus are asked to wear masks in common areas and elevators. It said it would keep an eye on Covid cases and give employees updates at least two weeks before any changes to its office policy.

Less than a year ago, Apple opened its new headquarters in Cupertino, Calif., a building that looked like a spaceship. It has not been used for the past two years.