Tether is quite likely a company with highest profit per employee.

So basically Tether Limited Inc. (obviously company behind Tether) posted that they had a PROFIT, not even revenue of $700 million in last fiscal quarter (Q1 2023). According to Rocketreach's information about company they have 44 employees (on Tether's official Linkedin it states 46 though so that is I guess the most accurate number we can go with).

So basically in just this fiscal quarter they had between $15.2-$16 million PROFIT per employee, so yes, not even revenue, just straight profits.

By googling the companies with highest profit per employee, a year old Wall Street Journal articles state a company called Air Lease being a company with higher annual profit per employee, and they basically had $4.5 million profit per employee in 2021. The second (Fannie Mae) on the list is company with $1.5 million profit per employee.

So basically Tether blows all of them out of water in just one fiscal quarter.