This white paper provides a comprehensive overview of industrial hygiene (IH) as defined by OSHA: the anticipation, recognition, evaluation, and control of workplace environmental hazards. It outlines the role of industrial hygienists and details five core IH focus areas—noise, ergonomics, lighting, temperature extremes, and air sampling. The document explains regulatory expectations, exposure assessment methods, and control strategies including engineering, administrative controls, and PPE. Practical guidance is provided on conducting noise surveys, ergonomic assessments, air monitoring, and managing heat and cold stress. The paper emphasizes IH as essential to regulatory compliance, worker health, and long-term productivity.

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