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Dec 05, 2025
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2025-2026 University Catalog
Occupational and Environmental Health Sciences, PhD
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About the Program
Occupational and environmental health professionals protect individuals from possible health effects caused by workplace and environmental hazards, such as lead or air pollution. Purdue’s Occupational and Environmental Health Sciences (OEHS) graduate program, which specializes in industrial hygiene, offers both Master of Science and PhD degree programs. The program’s mission is to advance professionals, leaders, and researchers in industrial hygiene and related fields. The program will prepare students with the knowledge and skills to be an outstanding scientist equipped to protect workers, families, and communities from hazardous environmental agents and workplace stressors. Program Website Program Requirements
90 Credits Required (30 credits from a Master’s may be applied.) Required Courses (18 credits)*
*If not completed by coursework from a Master’s degree. Core Courses (15 credits)
Professional Course (1 credit)
If students choose to take HSCI 613, they must also complete CITI Responsible Conduct of Research (RCR) training. Seminar Course (2 credits)
All students are required to take HSCI 69600 for 1 credit twice and for 0 credit all remaining fall and spring semesters. Statistics Selectives (6 credits)*
*Choose two, if not completed by coursework from a Master’s degree. Alternate statistics courses are allowed with advisor and committee approval. OEHS Selectives (6-9 credits)*
*If not completed by coursework from a Master’s degree. Dissertation Research (57-60 credits)
Students are expected to enroll in PhD Thesis Research every semester; the number of credits per semester can vary, but need to bring total credits, including coursework, to at least 90. Concentrations
Interdisciplinary concentrations: Additional Information
A full-time student has a minimum of 8 credit hours each semester (6 in the summer); doctoral students are strongly encourage to take research credits in addition to any coursework to ensure enrollment in at least 12 credit hours per semester. In addition to the core course listed in the student’s plan of study, the student’s course load can be supplemented by electives and/or additional research credits. In addition to the many course offerings in the School of Health Science and depending on the interests of the student, there are many more electives the student can chose throughout Purdue University. GPA Requirements
Graduate courses taken while registered as a graduate student at Purdue University may be considered for fulfilling the plan of study requirements only if the student has received grades of C or better. For courses at the 300/400-level taken as a graduate student or courses that represent either undergraduate or graduate excess credit or transfer credit, grades of B or better are required for fulfilling plan of study requirements. A total of 90 residency hours is required for the PhD degree. These residency hours may be any combination of course credit hours or research credit hours. Up to 30 hours may be credited for an MS degree upon recommendation of the PhD graduate student’s advisory committee and this may include all required coursework and the clinical internship if the equivalent has recently been taken. No more than 6 credit hours of coursework at the 300/400-level is allowed to form part of the student’s PhD degree plan of study. Graduate Programs Disclaimer
- The student is ultimately responsible for knowing and completing all degree requirements. Students should consult with their advisor/department for more information.
- Not all graduate programs may be actively recruiting students and course modality availability may vary.
- Please refer to the Explore Graduate Programs website for a list of currently available graduate programs.
- Transfer credit policy: Credits earned for graduate study at other universities (both domestic and international) may be applied toward an advanced degree. Only credit hours associated with graduate courses for which grades of B- or better were obtained will be eligible for transfer. Any additional conditions under which credit transfers may be made are determined by the various departments.
- Comparative information about Purdue University and other U.S. educational institutions is also available through the College Navigator tool, provided by the National Center for Education Statistics, and through the U.S. Department of Education College Scorecard.
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