Guidelines of Balancing the Security between Privacy and Activities

• Put policies in place explaining what is acceptable versus improper activity add /or behaviors
  
• Educate employees about what's expected from them, and why it's important, to gain their appreciation and support
• Inform them that you can, and will monitor them and explain why
• Capture relevant information
• Recognize that an employee has a right to know what information you have

Reference

• How to balance the security need to monitor employees activities whilst respecting their rights to privacy