In December 2002, a large majority (85 per cent) of American workers with Internet access at the office said they use the Web for personal purposes. Those workers who have access at home and at work average 3.7 hours per week conducting personal business online at work, while spending an average of 5.9 hours a week using the Web at home to perform work-related tasks. Those workers who only had access to the Internet at work averaged 6.5 hours per week on personal business while on the job.
Source: The Center for e-Service at the University of Maryland Robert H. Smith School of Business and Rockbridge Associates