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Occupational Health and Hygiene Course
More than 2 million learners worldwide

Occupational Health and Hygiene Course

Master the full scope of occupational health and hygiene — from hazard recognition and exposure assessment to risk control and health surveillance. This course equips safety professionals, hygienists, and health officers with the technical knowledge and practical tools to protect workers and build compliant, effective workplace health programs.

Dedika for businesses

What you will learn:

You will learn to identify and classify all major workplace hazard categories, design and execute exposure assessment strategies, and apply quantitative risk assessment methods to prioritize corrective actions. The course covers the complete hierarchy of controls, health surveillance program design, and sector-specific case studies in construction, manufacturing, and healthcare. You will also develop skills in occupational hygiene program management, internal auditing, and incident investigation. Supplementary modules address toxicology, ergonomics, psychosocial hazards, and digital data analytics tools used by modern hygiene professionals.

How you study in a practical way Occupational Health and Hygiene Course

How you practice Occupational Health and Hygiene Course

For companies who want to train their team

With Dedika for businesses, the course includes exercises and examples tailored to your own business and the way your company needs.

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Course content

8 Chapters • 40 LessonsDuration between 4 and 360 hours (you decide)

Chapter 1See details

Foundations of Occupational Health

  • Lesson 1 • Legal and Regulatory Framework

    Explains employer duties, worker rights, and regulatory enforcement mechanisms without referencing specific codes. Connects compliance obligations to practical workplace programs.

  • Lesson 2 • Occupational Disease and Injury Concepts

    Distinguishes acute injuries from chronic occupational diseases and explains causation pathways. Prepares students to recognize work-relatedness when assessing health outcomes.

  • Lesson 3 • Defining Occupational Health and Hygiene

    Introduces the scope and purpose of occupational health and industrial hygiene as disciplines. Provides the conceptual baseline for all subsequent hazard and control topics.

  • Lesson 4 • Hazard Categories and Classification

    Covers the five primary workplace hazard categories: chemical, physical, biological, ergonomic, and psychosocial. Builds the classification vocabulary used throughout the course.

  • Lesson 5 • Roles in the Occupational Health Team

    Maps the professional roles—hygienist, physician, nurse, safety officer—and their collaborative functions. Clarifies scope of practice boundaries relevant to course participants.

Chapter 2See details

Workplace Hazard Recognition

  • Lesson 1 • Hazard Documentation and Reporting

    Establishes standards for recording identified hazards in registers, incident logs, and inspection reports. Accurate documentation supports the risk assessment process introduced in the next chapter.

  • Lesson 2 • Recognizing Physical Hazards

    Covers recognition of noise, vibration, radiation, temperature extremes, and illumination deficiencies. Provides sensory and instrument-based cues for initial identification.

  • Lesson 3 • Recognizing Chemical Hazards

    Teaches identification of chemical hazards through safety data sheets, labeling systems, and process review. Builds chemical literacy needed before exposure assessment in later chapters.

  • Lesson 4 • Hazard Identification Methods

    Introduces structured techniques—walkthroughs, job safety analysis, and checklists—for finding hazards. Anchors recognition as the first step of the anticipate-recognize-evaluate-control model.

  • Lesson 5 • Recognizing Biological and Ergonomic Hazards

    Identifies biological agents in healthcare, agriculture, and laboratory settings alongside ergonomic risk factors. Links recognition to the specific industries where each hazard predominates.

Chapter 3See details

Exposure Assessment Principles

  • Lesson 1 • Exposure Assessment Framework

    Introduces the anticipate-recognize-evaluate-control model with emphasis on the evaluate phase. Defines similar exposure groups and the role of professional judgment in assessment design.

  • Lesson 2 • Physical Agent Measurement

    Addresses dosimetry and direct-reading instruments for noise, vibration, heat stress, and radiation. Calibration and quality assurance procedures are emphasized for reliable data.

  • Lesson 3 • Air Sampling Strategies and Methods

    Covers personal, area, and source sampling approaches along with sampler selection criteria. Connects sampling design decisions to statistical validity and regulatory acceptability.

  • Lesson 4 • Occupational Exposure Limits

    Explains time-weighted averages, short-term exposure limits, and ceiling values and their derivation basis. Students learn to select the correct limit type for a given exposure scenario.

  • Lesson 5 • Biological Monitoring

    Introduces urine, blood, and exhaled-air biomarkers as complements to air sampling for chemical exposure. Covers specimen collection ethics, timing, and interpretation relative to biological exposure indices.

Chapter 4See details

Risk Assessment and Prioritization

  • Lesson 1 • Risk Prioritization Techniques

    Introduces ranking tools including risk matrices, Pareto analysis, and weighted scoring to sequence control actions. Prioritization links exposure data to resource allocation decisions.

  • Lesson 2 • Risk Assessment Fundamentals

    Defines risk as the product of likelihood and consequence and distinguishes it from hazard. Establishes the risk assessment cycle as the decision-making backbone of occupational hygiene programs.

  • Lesson 3 • Quantitative Risk Assessment Methods

    Covers exposure-based risk characterization using toxicological data, cancer slope factors, and non-cancer hazard quotients. Prepares students to communicate numerical risk estimates to management.

  • Lesson 4 • Risk Register Development

    Guides students through building a structured risk register that captures hazard, exposure, risk level, and control status. The register becomes the management tool used in subsequent control chapters.

  • Lesson 5 • Vulnerable Worker Considerations

    Addresses heightened risk for pregnant workers, young workers, aging workers, and those with pre-existing conditions. Adjustments to exposure limits and task assignments are discussed.

Chapter 5See details

Hazard Control Strategies

  • Lesson 1 • Personal Protective Equipment Selection

    Guides selection, fit-testing, maintenance, and limitations of respiratory, hearing, skin, and eye protection. Emphasizes that PPE protects only the wearer and requires a formal program to be effective.

  • Lesson 2 • Engineering Controls Design

    Covers local exhaust ventilation, enclosure, isolation, and process modification as primary engineering solutions. Ventilation design principles and performance verification are included.

  • Lesson 3 • Control Effectiveness Verification

    Teaches post-implementation exposure reassessment, visual inspection, and worker feedback as verification tools. Confirms that selected controls achieve the intended exposure reduction before closing risk register items.

  • Lesson 4 • Administrative Controls and Work Practices

    Addresses job rotation, exposure time limits, safe work procedures, and housekeeping as administrative tools. Effectiveness depends on consistent worker compliance and supervisory enforcement.

  • Lesson 5 • Hierarchy of Controls Framework

    Presents the five-level hierarchy—elimination, substitution, engineering, administrative, PPE—with effectiveness rankings. Establishes the principle that higher-order controls are always preferred.

Chapter 6See details

Occupational Health Surveillance

  • Lesson 1 • Respiratory and Audiometric Surveillance

    Details spirometry, chest imaging, and audiometry protocols for workers exposed to dusts, fumes, and noise. Interpretation thresholds and referral criteria are specified.

  • Lesson 2 • Principles of Health Surveillance

    Defines health surveillance, its legal basis, and its distinction from general health screening. Establishes the link between identified hazards and the selection of surveillance tests.

  • Lesson 3 • Pre-Placement and Periodic Examinations

    Covers baseline and periodic medical examinations, fitness-for-work assessments, and their documentation. Periodic exams detect trends that single assessments cannot reveal.

  • Lesson 4 • Biological and Dermatological Surveillance

    Addresses blood lead, cholinesterase, and skin condition monitoring for chemical and biological exposures. Connects biological monitoring results to exposure assessment data from Chapter 3.

  • Lesson 5 • Surveillance Data Analysis and Reporting

    Teaches aggregation of individual results into group trends, incidence rates, and program effectiveness metrics. Reports feed back into the risk register and control review cycle.

Chapter 7See details

Occupational Hygiene Program Management

  • Lesson 1 • Integration with Management Systems

    Explains how occupational hygiene programs align with plan-do-check-act management system frameworks. Integration avoids duplication and embeds hygiene into existing organizational processes.

  • Lesson 2 • Program Auditing and Continuous Improvement

    Teaches internal audit planning, execution, and nonconformance management for hygiene programs. Audit findings close the management system loop and drive measurable program improvement.

  • Lesson 3 • Training and Competency Management

    Addresses training needs analysis, delivery methods, and competency verification for hygiene-related roles. Competent workers and supervisors are the primary defense against exposure exceedances.

  • Lesson 4 • Program Structure and Policy Development

    Covers the elements of a written occupational hygiene program: scope, policy, objectives, and accountabilities. A strong policy statement signals leadership commitment and drives resource allocation.

  • Lesson 5 • Incident Investigation and Root Cause Analysis

    Applies systematic investigation methods—fault tree, fishbone, and five-why—to occupational health incidents. Root cause findings drive corrective actions that prevent recurrence.

Chapter 8See details

Applied Occupational Hygiene Practice

  • Lesson 1 • Construction and Mining Sector Cases

    Covers silica dust, asbestos, whole-body vibration, and confined space hazards in construction and mining. High-risk sector complexity reinforces advanced control and surveillance decisions.

  • Lesson 2 • Manufacturing and Industrial Sector Cases

    Applies recognition, assessment, and control skills to metalworking, welding, and chemical processing environments. Students produce a full hazard and control report for a simulated facility.

  • Lesson 3 • Healthcare and Laboratory Sector Cases

    Addresses biological, chemical, and ergonomic hazards specific to clinical and research laboratory settings. Infection control and sharps safety are integrated with standard hygiene methodology.

  • Lesson 4 • Professional Ethics and Communication

    Addresses ethical obligations, conflict of interest, and clear communication of risk findings to diverse audiences. Ethical practice and effective communication are essential for professional credibility.

  • Lesson 5 • Capstone Risk Assessment Exercise

    Students conduct a full workplace assessment—recognition, sampling design, risk rating, and control selection—for an assigned scenario. Peer review and instructor feedback finalize competency demonstration.

Certification

Your valid completion certificate

This course is for you:

  • Safety officers ready to deepen their occupational health technical expertise.

  • Industrial hygienists seeking a structured, comprehensive professional reference framework.

  • HR managers responsible for employee wellness and workplace compliance programs.

  • Nurses and physicians transitioning into occupational or workplace health roles.

  • Engineers who design facilities and need to understand worker exposure implications.

  • Career changers entering the environmental health and safety field from adjacent industries.

What our students say

Your classes are perfect. I purchased the one-year package and finally have the opportunity to follow various topics of my interest without needing to change platforms... I thank you for everything you do, I've already recommended you to other people...
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Giulio CarloDigital Marketing Student
I like how the lessons are straight to the point and how I can switch chapters and skip content I don't need.
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