06/05/2026
Meet Gregory Day, MS, PhD—an HCOPH alum whose career reflects the power of commitment, precision, and purpose.
Gregory’s journey into Industrial Hygiene didn’t follow a traditional path. After building a successful career in business, he made the bold decision to start over—taking prerequisite courses while working full time, driven by a keen eye for detail and a readiness for something more.
“I quickly learned that I had found my calling.”
From earning his MS (1996) to his PhD (2002), his time at HCOPH shaped a career dedicated to protecting worker health and safety. A pivotal research experience—developing a Monte Carlo simulation alongside faculty mentorship—set the course for his future and opened doors that would define his professional path.
Now retired from his role as an Environmental and Occupational Safety and Health Officer with the Federal Aviation Administration Civil Aerospace Medical Institute, Gregory spent his career safeguarding workplace environments and supporting the health of aviation professionals.
His advice to future students? Stay committed and embrace the challenge—because the opportunities that follow are worth it.
