Occupational Health & Medical Surveillance: An Employer's Guide
Which OSHA standards trigger medical surveillance, what exams are required, and how to keep exposure and medical records compliant.
- Records rule
- 29 CFR 1910.1020
- Science base
- NIOSH (CDC)
- Common triggers
- Silica, lead, noise, respirators
Many OSHA standards require medical surveillance — baseline and periodic exams — for workers exposed to specific hazards such as respirable crystalline silica, asbestos, lead, noise, and respirator use. NIOSH, part of the CDC, provides much of the underlying science and recommended exposure limits.
An effective program ties together exposure monitoring (to confirm who needs surveillance and whether controls work), the required medical exams, recordkeeping, and worker training.
The first step is mapping your actual exposures to the standards that apply, then scheduling the exams and monitoring each one requires.
OSHA compliance checklist
- Map exposures to standards — Identify silica, lead, asbestos, noise, bloodborne-pathogen, or respirator triggers in your operations.
- Provide required medical exams — Deliver baseline and periodic surveillance per each applicable standard.
- Monitor exposures — Air and noise sampling confirm controls and define who needs surveillance.
- Keep medical and exposure records — Retain per 29 CFR 1910.1020 — often the duration of employment plus 30 years.
- Train workers — Cover hazards, controls, and employees' rights to their records.
A starting point, not legal advice — verify against the primary sources cited below and current rules for your jurisdiction.
Latest OSHA coverage
- Hypersensitivity Pneumonitis Is Rising While Other Occupational Lung Diseases Decline: What Employers Need to Know
- Workers' Memorial Day 2026: What the Latest Fatality Data Tells Employers About the State of Workplace Safety
- Chronic Disease Is Now a Workforce Crisis: How NIOSH's Total Worker Health Approach Can Help Employers Respond
- Psychosocial Hazards Are Now a Top Workplace Health Risk: What Employers Need to Know
- OSHA Cites Georgia Stone Manufacturers for Silica Violations — Again: What Employers Need to Know About Silica Enforcement in 2026
Frequently Asked Questions
Hypersensitivity pneumonitis (HP) is an immune-mediated inflammatory lung disease caused by repeated inhalation of organic dusts, mold spores, bacterial contaminants, animal proteins, or certain chemicals in the workplace. Common occupational forms include farmer's lung (from moldy hay), machine operator's lung (from contaminated metalworking fluids), and chemical worker's lung (from isocyanates in spray paints and foam production).
According to a 2026 study in the American Journal of Respiratory and Critical Care Medicine analyzing CDC WONDER data from 1999–2023, HP mortality rose from 0.06 to 0.22 per 100,000 (an annual increase of 7.74%), while silicosis, asbestosis, and coal workers' pneumoconiosis all declined significantly. Researchers suggest the increase may reflect evolving workplace exposures in newer industries, improved diagnostic recognition, and potentially inadequate ventilation and exposure controls in emerging work environments.
High-risk industries include agriculture (grain handling, animal husbandry), manufacturing (metalworking, plastics, foam production), food processing, woodworking, and any workplace with water-damaged HVAC systems or persistent moisture problems. Workers exposed to mold, metalworking fluid mists, isocyanates, bird proteins, or organic dusts face elevated risk.
Employers should identify and assess potential sources of allergenic dusts or aerosols, implement engineering controls such as local exhaust ventilation and HVAC maintenance, provide NIOSH-approved respirators under a compliant respiratory protection program per 29 CFR 1910.134, train workers to recognize early symptoms, and conduct health surveillance with periodic pulmonary function testing for at-risk workers. Prompt removal from exposure is critical if HP is suspected.
There is no OSHA standard specific to hypersensitivity pneumonitis. However, employers are required to protect workers from recognized respiratory hazards under OSHA's General Duty Clause and must comply with the Respiratory Protection Standard (29 CFR 1910.134). NIOSH and OSHA also provide general recommendations for preventing respiratory illnesses in the workplace, including engineering controls, exposure monitoring, and health surveillance.
Workers' Memorial Day is observed annually on April 28, the anniversary of the Occupational Safety and Health Act taking effect in 1971. It honors workers who have been killed, injured, or made ill by their jobs. OSHA, the AFL-CIO, labor unions, and safety organizations hold ceremonies and events to remember fallen workers and recommit to preventing future workplace tragedies.
According to the Bureau of Labor Statistics Census of Fatal Occupational Injuries, 5,070 workers died from work-related injuries in 2024. This represents a 4% decrease from 5,283 fatalities in 2023 and a fatal injury rate of 3.3 per 100,000 full-time equivalent workers, meaning a worker died approximately every 104 minutes.
Transportation incidents remain the leading cause, accounting for 38.2% of all workplace fatalities in 2024 with 1,937 deaths. Falls, slips, and trips are the second-leading cause with 844 fatalities, followed by exposure to harmful substances or environments with 687 deaths. Violence and other injuries by persons or animals accounted for 733 deaths, including 470 homicides and 263 suicides.