Amazon monitors warehouse workers minute by minute and fires them if they "did nothing" for more than two hours a day.

The company tracks and records every minute of “off-hours” using RF scanners that warehouse employees use to track customer packages. If an employee has accumulated from 30 to 59 minutes of "non-working" time for the first time in a year, he is first issued a written warning. If from 60 to 120 minutes a day has accumulated, or after a warning, an employee has accumulated another 30 to 59 minutes, he can be fired.