I once knew of company (not a client) at which its CEO would sit in his office all day and watch a bank of monitors connected to cameras all over the workplace so that he could track the productivity of his employees.
He even had one outside the bathrooms to record how frequently and for how long his employees were taking potty breaks. Needless to say, morale among his employees was not great.
Monitoring of employees has gone even more high tech. The Chicago Tribune reports that Amazon has developed wristbands to track worker hand movements as they fill and ship orders