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Impact of Personal Protective Equipment Training on Occupational Injury Prevention among Auto Mechanics in Nigeria

Abstract

Occupational injuries remain an important public health and workplace safety concern among auto mechanics in Nigeria, who are routinely exposed to mechanical, chemical, physical, and environmental hazards during vehicle repair and maintenance activities. Auto mechanics may experience cuts, burns, eye injuries, falls, crush injuries, hearing problems, respiratory irritation, chemical exposure, and musculoskeletal injuries resulting from unsafe handling of tools, machinery, fuels, lubricants, batteries, welding equipment, and other hazardous materials. Despite these risks, the use of appropriate personal protective equipment (PPE) may be inconsistent because of inadequate knowledge, discomfort, cost, limited availability, poor workplace safety culture, and inadequate training. PPE training provides an opportunity to educate mechanics on the importance, selection, correct use, maintenance, and limitations of protective equipment appropriate to specific occupational hazards. Against this background, this study investigates the impact of personal protective equipment training on occupational injury prevention among auto mechanics in Nigeria. The study will be anchored on the Health Belief Model, Social Cognitive Theory, and Occupational Health and Safety Framework. The Health Belief Model explains how mechanics' perceptions of susceptibility to occupational injuries, perceived severity, perceived benefits of PPE use, perceived barriers, and cues to action may influence their willingness to use protective equipment. Social Cognitive Theory explains how mechanics may acquire and maintain safe occupational practices through observational learning, peer modelling, reinforcement, social interaction, and self-efficacy. The Occupational Health and Safety Framework emphasizes hazard identification, risk assessment, worker education, engineering and administrative controls, appropriate PPE use, incident reporting, and injury prevention as essential components of occupational safety. Collectively, these theoretical perspectives provide a suitable framework for explaining how PPE training may influence occupational injury prevention among auto mechanics in Nigeria. The study will adopt a quantitative quasi-experimental or analytical cross-sectional research design. The study population will comprise auto mechanics aged 18 years and above working in selected automobile repair workshops across Nigeria. A multistage sampling technique will be used to select geopolitical zones, states, local government areas, automobile repair clusters, workshops, and eligible mechanics. PPE training will be assessed using indicators such as frequency and duration of training, training content, identification of occupational hazards, selection of appropriate PPE, correct wearing and removal procedures, PPE maintenance and storage, replacement of damaged equipment, limitations of PPE, practical demonstrations, trainer qualifications, opportunities for questions, and follow-up supervision. Occupational injury prevention will be assessed using indicators such as PPE utilization, safe handling of tools and machinery, eye and face protection, hand protection, respiratory protection, hearing protection, protective footwear, safe chemical handling, workplace housekeeping, injury-reporting practices, and occurrence or prevention of cuts, burns, eye injuries, falls, crush injuries, and other occupational incidents. Data will be collected using structured questionnaires, PPE knowledge assessment tools, workplace observation checklists, injury-prevention practice checklists, workshop injury records where available, training attendance records, and relevant occupational health documents. Descriptive statistics will be used to summarize participants' characteristics, occupational exposures, PPE training, and injury-prevention practices. Inferential statistical techniques, including chi-square tests, t-tests, correlation analysis, and logistic or multiple regression analysis where appropriate, will be used to determine the impact of PPE training on occupational injury prevention. Where a quasi-experimental design is adopted, PPE-use and injury-prevention scores before and after implementation of the training programme may be compared with those of a comparison group to determine changes associated with the intervention. Diagnostic tests will also be conducted to assess the reliability, validity, and robustness of the findings. The study is expected to find that PPE training has a significant positive impact on occupational injury prevention among auto mechanics in Nigeria. Mechanics exposed to structured and practical PPE training are expected to demonstrate improved knowledge and use of appropriate protective equipment and safer workplace practices compared with mechanics without comparable training. Practical demonstrations may improve mechanics' ability to select and correctly use protective gloves, safety goggles, protective footwear, hearing protection, respirators, helmets, coveralls, and other equipment appropriate to specific occupational hazards. Improved PPE use and hazard awareness may reduce exposure to mechanical injuries, chemical splashes, burns, dust, excessive noise, and other workplace hazards. Training may also encourage mechanics to report unsafe conditions and adopt safer methods of handling tools, machinery, fuels, lubricants, batteries, and other hazardous materials. However, high PPE costs, limited availability, discomfort, inadequate workshop facilities, hot working conditions, peer influence, low supervision, and weak enforcement of occupational safety standards may reduce effectiveness. The study therefore expects regular, practical, occupation-specific, and adequately supported PPE training to contribute significantly to improved occupational injury prevention among auto mechanics in Nigeria. The study is expected to contribute to the literature on personal protective equipment, occupational injury prevention, auto-mechanic safety, occupational health education, workplace safety, informal-sector health, hazard prevention, and public health in Nigeria. The findings will provide useful information to the Federal Ministry of Health and Social Welfare, Federal Ministry of Labour and Employment, state ministries of health and labour, occupational health professionals, automobile mechanic associations, workshop owners, local government authorities, community health workers, development partners, and policymakers regarding strategies for improving occupational safety among auto mechanics. The study will also provide evidence-based recommendations for strengthening PPE training within mechanic associations and vocational programmes, improving access to affordable protective equipment, promoting practical safety demonstrations, strengthening workplace supervision, encouraging routine safety assessments, and integrating occupational health education into informal-sector workplace programmes across Nigeria.

Keywords: Personal protective equipment, PPE training, occupational injury prevention, auto mechanics, occupational health, workplace safety, informal sector workers, hazard prevention, occupational health education, Nigeria, public health.