Master’s in Occupational and Environmental Hygiene

The professional outlook for occupational safety is tremendous. A master’s degree in Occupational and Environmental Hygiene from Johns Hopkins gives working professionals the expertise, connections, and credentials to excel in this growing field.

Johns Hopkins graduates go on to have lucrative and rewarding careers as industrial hygienists, environmental risk assessors, occupational health specialists, emergency preparedness coordinators, environmental policy analysts, and occupational health and safety managers.

Courses completed through the Occupational and Environmental Health certificate can count toward completion of the MS degree. 


Johns Hopkins offer a number of graduate programs designed to match your goals and interests.

Master of Science in Occupational and Environmental Hygiene (MS) FULL-TIME
1.5 years, onsite: Complete an internship between years one and two to get work experience in industrial hygiene

Master of Science in Occupational and Environmental Hygiene (MS) PART-TIME
Up to 5 years to complete, hybrid (most classes online): Flexible format; complete independent project at your place of employment

Master of Health Science (MHS)
9 months full-time, onsite / 2 years, part-time, onsite: One-year program culminates in a short essay

What Johns Hopkins graduates say

“This master’s program has allowed me to meet full-time professionals in the same field who are equally devoted to learning and being the best in their field.”
–  Pearl Lee, MS ’19

“The long-term professional relationships I formed with classmates and faculty members at JHU continue to be essential to my career. “
–  Caleb Ginorio, MS ‘21

For more information on our programs, please do not hesitate to contact.

Kirsten Koehler
Associate Professor
Environmental Health and Engineering
Johns Hopkins Bloomberg School of Public Health