Now I've had it happen to us. We got a notice from the state unemployment office that one of our employees (full-time, still employed) applied for unemployment in December. The slow mail service doesn't help. 

Also this week's headlines for my state:

Maryland Department of Labor Detected Over 156,000 Potentially Fraudulent Unemployment Claims Filed Since January
Of the 243,186 new claims filed in Maryland since January 1, 2021, 156,403 claims (64.31%) have been flagged as being potentially fraudulent due to new and existing aggressive security measures in place to protect taxpayers and the integrity of the state’s program. As fraudsters are becoming more brazen and adapting their tactics, Maryland continues to add new technology and safeguards to prevent and detect fraud. 

Over 87% of Claims Flagged and Investigated Confirmed as Fraudulent