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Occupational Health and Safety Course
Over 2 million learners across the globe

Occupational Health and Safety Course

Become the safety professional every industrial facility needs. This course gives you the technical depth and practical tools to identify hazards, control risks, investigate incidents, and build safety management systems that actually work. From OHS compliance to process safety, every skill you gain applies directly on the job.

Dedika for businesses

What you will learn:

You will master the full scope of industrial safety, starting with hazard recognition and risk assessment methodologies and moving through hazard control strategies, occupational hygiene, and process safety management. You will learn to design emergency response plans, lead incident investigations, and conduct internal audits. The course also covers safety leadership, contractor management, ergonomics, and digital safety tools. By the end, you will be equipped to manage safety programmes at the facility level, communicate performance data to leadership, and drive continuous improvement across any industrial operation.

How you study practically Occupational Health and Safety Course

How you practise Occupational Health and Safety Course

For companies looking to train their teams

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 • 39 LessonsDuration between 4 and 360 hours (you decide)

Chapter 1See details

Foundations of Industrial Safety

  • Lesson 1 • History and Purpose of Industrial Safety

    Traces the evolution of workplace safety from early industrialisation to modern standards. Provides context for why systematic safety management is legally and ethically required.

  • Lesson 2 • Regulatory Frameworks and Compliance

    Introduces the structure of occupational safety regulations and employer obligations. Connects compliance requirements to practical workplace responsibilities.

  • Lesson 3 • Hazard Recognition and Classification

    Defines physical, chemical, biological, ergonomic, and psychosocial hazard categories. Builds the vocabulary needed for all subsequent hazard analysis work.

  • Lesson 4 • Safety Culture and Human Factors

    Examines how organisational culture and human behaviour influence accident rates. Establishes the link between leadership commitment and frontline safety performance.

Chapter 2See details

Risk Assessment Methodologies

  • Lesson 1 • Risk Register Development and Review

    Consolidates assessment outputs into a living risk register with ownership and review cycles. Prepares students to manage ongoing risk governance across a facility.

  • Lesson 2 • Principles of Risk Assessment

    Defines risk as the product of likelihood and consequence and introduces the assessment cycle. Anchors all subsequent assessment techniques in a common analytical framework.

  • Lesson 3 • Bow-Tie and Barrier Analysis

    Uses bow-tie diagrams to map threat pathways and recovery barriers around a central hazard event. Strengthens barrier thinking applied in emergency planning chapters.

  • Lesson 4 • Job Hazard Analysis Techniques

    Teaches step-by-step task decomposition to surface hidden hazards before work begins. Directly supports the creation of safe work procedures covered later.

  • Lesson 5 • Failure Mode and Effects Analysis

    Applies FMEA to equipment and process failures to predict and prevent incidents. Introduces risk priority numbers for ranking corrective actions.

Chapter 3See details

Hazard Control and the Hierarchy of Controls

  • Lesson 1 • Administrative Controls and Safe Work Procedures

    Develops written procedures, permit systems, and rotation schedules as behavioural controls. Reinforces the link between documented procedures and consistent worker compliance.

  • Lesson 2 • Engineering Controls Design

    Covers guarding, ventilation, interlocks, and isolation as primary engineering solutions. Connects design choices to quantifiable exposure reduction outcomes.

  • Lesson 3 • The Hierarchy of Controls Framework

    Presents the five-level control hierarchy and the rationale for prioritising higher-order controls. Establishes the decision logic used throughout all applied control chapters.

  • Lesson 4 • Personal Protective Equipment Selection

    Guides selection, fit-testing, maintenance, and disposal of PPE for common industrial hazards. Addresses the limitations of PPE as a sole control measure.

  • Lesson 5 • Control Effectiveness Verification

    Introduces monitoring methods to confirm that installed controls perform as intended. Feeds directly into the corrective action and audit processes covered later.

Chapter 4See details

Occupational Hygiene and Occupational Health

  • Lesson 1 • Biological and Ergonomic Hazard Evaluation

    Evaluates pathogen exposure routes and musculoskeletal disorder risk factors in industrial settings. Integrates health surveillance data into control programme design.

  • Lesson 2 • Chemical Exposure Assessment

    Covers air sampling strategies, analytical methods, and comparison to occupational exposure limits. Builds the technical foundation for chemical control decisions.

  • Lesson 3 • Thermal Environment and Radiation Hazards

    Addresses heat stress indices, cold stress thresholds, and ionising and non-ionising radiation limits. Prepares students to design monitoring and control programmes for extreme environments.

  • Lesson 4 • Noise and Vibration Monitoring

    Teaches dosimetry, sound level measurement, and vibration assessment for hand-arm and whole-body exposure. Connects measurement data to hearing conservation programme requirements.

  • Lesson 5 • Health Surveillance and Medical Monitoring

    Designs pre-placement, periodic, and exit health surveillance programmes linked to specific exposures. Ensures student ability to interpret surveillance trends and trigger interventions.

Chapter 5See details

Process Safety and Major Hazard Management

  • Lesson 1 • Hazard and Operability Studies

    Teaches HAZOP methodology using guide words to identify process deviations and their consequences. Develops facilitation skills needed to lead multidisciplinary review teams.

  • Lesson 2 • Pressure Systems and Mechanical Integrity

    Addresses inspection, testing, and quality assurance for pressure vessels, piping, and relief systems. Ensures students can manage mechanical integrity programs that prevent catastrophic releases.

  • Lesson 3 • Flammable and Explosive Atmosphere Control

    Covers ignition source management, area classification, and explosion protection strategies. Directly applies hazard control principles to high-energy release scenarios.

  • Lesson 4 • Layer of Protection Analysis

    Applies LOPA to quantify risk reduction from independent protection layers against a target risk level. Bridges qualitative HAZOP findings to quantitative safety integrity decisions.

  • Lesson 5 • Process Safety Management Overview

    Introduces the fourteen elements of process safety management and their interdependencies. Frames process safety as a system distinct from but complementary to occupational safety.

Chapter 6See details

Emergency Preparedness and Response

  • Lesson 1 • Medical Emergency and First Aid Protocols

    Covers industrial first aid priorities, triage principles, and coordination with emergency medical services. Prepares safety specialists to manage medical response until professional help arrives.

  • Lesson 2 • Emergency Drills and Exercise Design

    Designs tabletop, functional, and full-scale exercises to test plan validity and team readiness. Introduces after-action review methods to convert exercise findings into plan improvements.

  • Lesson 3 • Fire Prevention and Suppression Systems

    Covers fire triangle principles, hot work controls, and fixed and portable suppression system selection. Connects fire hazard controls from earlier chapters to active response capabilities.

  • Lesson 4 • Emergency Response Plan Development

    Builds a compliant emergency response plan covering roles, resources, communication, and evacuation. Establishes the planning baseline that all subsequent response training depends on.

  • Lesson 5 • Hazardous Material Spill Response

    Trains students in spill containment, decontamination, and responder protection for chemical releases. Applies chemical hazard knowledge from occupational hygiene to emergency scenarios.

Chapter 7See details

Incident Investigation and Root Cause Analysis

  • Lesson 1 • Root Cause Analysis Methods

    Compares fault tree analysis, fishbone diagrams, and the five-whys method for identifying systemic causes. Selects the appropriate method based on incident complexity and available data.

  • Lesson 2 • Corrective Action Planning and Tracking

    Develops SMART corrective actions linked to root causes and assigns ownership with deadlines. Integrates findings into the risk register and safety management system for systemic improvement.

  • Lesson 3 • Witness Interview Techniques

    Applies cognitive interview principles to gather accurate, unbiased accounts from involved parties. Addresses common interviewer errors that distort factual reconstruction.

  • Lesson 4 • Incident Classification and Reporting

    Defines incident types from near-misses to fatalities and establishes internal and regulatory reporting thresholds. Creates the reporting culture foundation that feeds investigation quality.

  • Lesson 5 • Scene Preservation and Evidence Collection

    Teaches immediate post-incident actions to secure the scene and collect physical and documentary evidence. Ensures investigation integrity before root cause analysis begins.

Chapter 8See details

Safety Management Systems and Continuous Improvement

  • Lesson 1 • Continuous Improvement and Innovation

    Applies plan-do-check-act cycles, lessons-learned programmes, and benchmarking to drive ongoing SMS improvement. Synthesises all course competencies into a sustainable improvement culture.

  • Lesson 2 • Safety Performance Measurement

    Distinguishes leading and lagging indicators and builds a balanced safety scorecard for a facility. Enables data-driven decisions that replace reactive safety management with proactive control.

  • Lesson 3 • Internal Safety Auditing

    Trains students to plan, conduct, and report internal audits against SMS requirements and regulatory standards. Builds audit competency that drives the check phase of continuous improvement.

  • Lesson 4 • Safety Management System Architecture

    Maps the structural elements of a recognised SMS framework and their interdependencies. Provides the integrating blueprint that connects all previous chapter competencies.

  • Lesson 5 • Management Review and Strategic Planning

    Structures management review meetings to evaluate SMS performance and set strategic safety objectives. Connects operational data to executive decision-making for resource allocation.

Certification

Your valid completion certificate

This course is for you:

  • Maintenance supervisor: ready to formalise hazard control responsibilities at their facility.

  • Recent engineering graduate: seeking a structured entry point into occupational safety roles.

  • Production team leader: wanting to reduce injuries and strengthen their crew's safety habits.

  • Military veteran: translating operational risk management experience into a civilian safety career.

  • Environmental coordinator: expanding their scope to cover workplace health and safety programmes.

  • Career changer: coming from construction or logistics and targeting industrial safety positions.

What our students say

Your lessons 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...
Giulio Carlo
Giulio CarloDigital Marketing Student
I like how the lessons are straight to the point and how I can change chapters and skip content I don't need.
Mariana Ferres
Mariana FerresPhotography Student
I like the content and the way videos are presented and transcribed, which speeds up the process!
Luciana Alvarenga
Luciana AlvarengaNail Design Student
The platform is fast, simple to use. The diversity of content and complementary videos help a lot with learning.
André Felipe
André FelipePrompt Engineering Student

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