Check for key warning signs before starting work

Based on years of research and industry collaboration

We spend a lot of time planning our work, but we sometimes neglect the human factors related to safety. Learn how to have critical conversations to expose warning signs that could lead to a serious injury or fatality.


About Your Instructor


Matthew Hallowell

Dr. Matthew Hallowell is a President’s Teaching Scholar and Endowed Professor of Construction Engineering at the University of Colorado at Boulder. He earned a BS and MS in Civil Engineering and a PhD with a focus on Construction Engineering and Occupational Safety and Health. Before his academic career, he worked in construction as a laborer, project engineer, and quality inspector.Dr. Hallowell specializes in construction safety research, with an emphasis on the science of safety. He collaborates with companies and industry associations like the Edison Electric Institute, Project Leadership Institute, Canadian Pipeline Association, and the INGAA foundation. For his research, he has received the National Science Foundation CAREER Award and the Construction Industry Institute Outstanding Researcher Award.


Include a list of items to support the central theme of your page. Bulleted lists are a great way to parse information into digestible pieces.

  • Explain the key warning signs of serious injuries and fatalities

  • Observe a conversation to identify any warning signs

  • Assess if work is safe to start



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