KEY POINTS
  • Amazon is requiring all U.S. warehouse workers to wear a face mask inside operations facilities due to the spread of the Covid omicron variant.
  • The company in November lifted the mask requirement for fully vaccinated warehouse workers.
  • Omicron is now considered the dominant Covid strain in the country, accounting for 73% of sequenced cases.
Amazon fulfillment center in Eastvale, California on Tuesday, Aug. 31, 2021.

Amazon's U.S. warehouse employees will once again be required to wear face masks at work amid a surge in Covid-19 cases due to the highly transmissible omicron variant.

Workers must wear face coverings inside Amazon operations facilities — even if they're fully vaccinated or live in an area where masks aren't mandated — according to an employee notice, which was viewed by CNBC.