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ROH Exam Preparation

Watch the Essay-Style Program Preview

Preview how broad occupational hygiene scenarios are broken down into clear components, organized into structured responses, and developed into defensible professional answers.

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ROH Essay-Style Preparation Program

The essay-style component is one of two equally weighted components of the ROH Part I written examination. 


Essay questions are broad in nature and often require integration of multiple occupational hygiene competency areas within a single answer. 
This program helps participants develop the depth of knowledge, breadth of reasoning, professional judgment, and structured written communication needed to analyze occupational hygiene scenarios and produce clear, defensible answers. 

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Program Content

  • 6 learning modules 
  • 15 focused sections
  • 4.5 hours of video instruction

Practice Material

  • 5 high-yield scenarios
  • Detailed model-answer analysis
  • Structured response guidance

Review & Completion

  • 3 post-assessment exercises 
  • 1-year access to course materials
  • Certificate of Completion

ROH Multiple-Choice Preparation Program

The multiple-choice component is one of two equally weighted components of the ROH Part I written examination. 


This training program is designed to strengthen the factual and technical occupational hygiene knowledge required across the published ROH competency areas, with emphasis on technical concepts, definitions, calculations, and applied fundamentals required for success on the multiple-choice portion of the examination.

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MCQ Knowledge Focus

  • Core occupational hygiene knowledge 
  • Technical concepts and definitions 
  • Calculations and applied fundamentals

Program Structure

  • Published ROH competency areas
  • Individual competency modules 
  • Self-paced learning progression 

Learning Approach

  • Video-based instruction 
  • Participatory learning activities
  • Knowledge checks and self-assessments

ROH Oral Examination Coaching

One-on-one coaching for candidates preparing for Part II of the ROH examination, including those awaiting Part I results or those invited to the oral interview. Coaching focuses on scenario-based oral practice, problem-solving, professional judgment, and clear verbal communication.

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Session Format

  • 60-minute one-on-one session
  • Scenario-Based Oral Practice
  • Structured feedback

Practice Focus

  • Verbal responses to questions and scenarios 
  • Problem-solving and professional judgment 
  • Clear technical communication

Feedback Areas

  • Response structure and clarity 
  • Technical reasoning and judgment 
  • Communication  during discussion 

Preparing for the ROH Examination

The Registered Occupational Hygienist (ROH) designation represents advanced occupational hygiene knowledge, professional judgment, practical experience, and commitment to ethical practice and continuing professional development.


The ROH examination process evaluates more than memorized information. It assesses the ability to apply occupational hygiene principles, integrate technical knowledge, exercise professional judgment, and communicate defensible conclusions in practice-based situations.


 

Part I – Written Examination

The ROH written examination consists of two equally weighted components:


  • Multiple-Choice Component 
  • Essay-Style Component 


A passing grade must be achieved in each component to successfully complete Part I.

 

Part II – Oral Examination

Part II is an oral interview for individuals who successfully complete Part I. The interview evaluates:


  • Problem-solving skills
  • Professional judgment
  • Communication skills


The oral examination is approximately one hour in duration.


EHS Occupational Health & Safety training resources are designed to support preparation for the ROH examination through practical, competency-informed learning, real-world occupational hygiene examples, and structured professional reasoning.

Questions About ROH Exam Preparation?

Have a question about ROH essay-style preparation, future MCQ preparation, oral examination coaching, course access, or group training? 

Contact Us

 

EHS Occupational Health and Safety Ltd. is an independent occupational hygiene and health and safety training provider and is not affiliated with or endorsed by CRBOH, BGC, or any examination board. 


 © 2026 EHS Occupational Health and Safety Ltd. All rights reserved.

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