Abstract: A computer activity monitoring system is disclosed for monitoring a user's input on a computer having a processor, memory, and input unit. The system functions by first initializing an activity status indicator in the memory. Next, the activity of the operator's input device is measured over a time period to determine an activity rate. The activity rate is then compared to at least one limit selected from the group consisting of a work limit and a rest limit. If the activity rate is greater than the work limit, then the activity status indicator is adjusted according to a first function. If the activity is less than the rest limit, then the activity status indicator is adjusted according to a second function. A warning is indicated if the activity status indicator reaches a predetermined alarm level. Also disclosed is an apparatus for performing this method and a computer readable medium, such a floppy disk, hard drive, CD ROM, or tape, having instructions for performing this method.