Both private and public sector employers can monitor employees' use of employer-owned computers:

Question

Quizplus · Accepted Answer

Generally, employers must give employees notice that their computer use may be monitored. This notice can be given through employee handbooks or policies, employment contracts, or simply a sign or banner on the computer screen. Without proper notice, an employer's monitoring may be illegal. However, there are some exceptions to this rule, such as when an employer suspects criminal activity or when monitoring is necessary to ensure employee productivity and prevent harm to the company.

Both Private and Public Sector Employers Can Monitor Employees' Use