As scientists learn more about the Covid-19 omicron variant and its arrival in the U.S. on Wednesday, business leaders are scrambling to figure out how it could impact their workplaces, including return-to-office plans. Just as the delta variant pushed Labor Day 2021 office reopenings back, the omicron variant could delay those plans further into 2022.

As a refresher, in response to the delta variant's spread and within a few short weeks in July, several of the most influential tech companies delayed their return dates from September to October, while others pushed their timelines into 2022. In the months since, businesses have adjusted their reopenings countless times.