A large portion of the American workforce seemed set to return to the office in January.

Then, omicron arrived.

The new Covid variant, which is now in at least 19 states as of Wednesday, has already caused multiple companies to delay their office reopenings. Detroit-based Ford Motor announced Monday that it won’t reopen offices until March, due to omicron and an increase of Covid cases in Michigan. Last week, Google pushed its Jan. 10 return date further into 2022, without pinpointing a new date.