Here is an example summary of this reading selection:

In “Snoopers at Work,” Bill Bryson explains that privacy is all but disappearing, especially in the workplace. According to Bryson, over half of companies listen in on phone calls; others watch employees using hidden cameras. An obsession with drugs is particularly common among employers, with over 90% of employers testing employees for drugs. One company went so far as to entrap an employee, others to forbid employees ever to drink or smoke, even on their own time. Worse still companies that monitor systems the movements of workers throughout the day, leaving none of their actions private.

Your summary will differ from this one in the way it is written, but it should include roughly the same information.