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
- NIOSH’s 2026 Design Award: Preventing Exposure Before Workers Enter Tanks
- Tick Bite ER Visits Hit a 10-Year High in Parts of the U.S.: What Employers Must Do to Protect Outdoor Workers
- Agentic AI Is Reshaping HR Compliance: What Employers Need to Know About the Mid-2026 Platform Surge
- OSHA's FY2026 Harwood Grant Window Has Closed: Training Resources and Next Steps for Employers
- OSHA's Proposed $3.5 Million Channelview Penalties: HAZWOPER Lessons for Employers
- Occupational Hearing Loss in 2026: New DOL Testing Standards and OSHA Fit-Testing Guidance Reshape Employer Obligations
- The Hidden Mental Health Costs of Workplace Injuries: What Employers Need to Know in 2026
- National Safety Month 2026: Why Holistic Worker Health Is This Year's Defining Theme
- NIOSH's Updated Worker Well-Being Questionnaire: A Free Tool Every Employer Should Know About
- NIOSH's Algorithmic Hygiene Framework: What HR Teams Need to Know About Managing AI Workplace Risks
- Wildfire Smoke and Outdoor Workers: What Employers Must Do Before Fire Season 2026
- 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
NIOSH and its partners presented the 2026 award to Square Robot, Inc. The agency’s September 15 announcement recognizes robotic technology that inspects above-ground industrial liquid storage tanks without workers entering them.
NIOSH describes Prevention through Design as anticipating and designing out workplace hazards in facilities, equipment, processes, and work methods. Employers can apply it by changing how a task is performed so workers avoid exposure, rather than relying only on training or protective equipment.
Not automatically. Under OSHA’s general-industry standard, employers must evaluate permit spaces and prevent unauthorized entry; avoiding entry for one inspection does not eliminate the tank’s hazards or establish that it qualifies for reclassification.
If remaining duties require respirator use, applicable OSHA respiratory-protection requirements still apply. Under 29 CFR 1910.134, medical evaluation precedes fit testing or required use, and tight-fitting respirators require fit testing before initial use and at least annually.
Following NIOSH’s recommendation to evaluate controls regularly, employers can compare entry frequency, time spent on exposure-prone tasks, and relevant exposure measurements before and after a change. Include setup, cleaning, maintenance, and equipment failures rather than measuring only normal operation.
Yes. According to NIOSH and OSHA recordkeeping standards under 29 CFR Part 1904, tick bites that occur while an employee is performing work duties are considered reportable work-related injuries. If the resulting illness requires medical treatment beyond first aid, days away from work, or restricted duty, it must be recorded on the employer's OSHA 300 Log.
Outdoor workers in landscaping, construction, forestry, farming, park and wildlife management, utility line work, highway maintenance, oil field work, and railroad work face the highest risk. According to the Bureau of Labor Statistics, about 33% of U.S. workers have routine outdoor exposure, and nearly half of outdoor workers identify as Hispanic, placing them at increased risk.
Alpha-gal syndrome is a potentially life-threatening allergic reaction to red meat triggered by bites from the lone star tick. The CDC estimates as many as 450,000 Americans may be affected, and Virginia Commonwealth University researchers report a roughly 100-fold increase in positive alpha-gal antibody test results between 2013 and 2024 (preliminary data). Symptoms appear hours after eating red meat, making it difficult to diagnose. Outdoor workers are at elevated risk due to frequent tick exposure.