If you are planning to start your career as a site manager you need to learn about riddor dangerous occurrence. RIDDOR stands for Reporting of Injuries, Diseases, and Dangerous Occurrences Regulations. This is important in a workplace to enforce the Health and Safety standard is being followed by the employer and/or company. You can learn more about RIDDOR and its preventions with RIDDOR site supervisory courses at the College of Contract Management. They provide live online courses that allow flexible learning without interfering with your work commitments.