Managing Occupational Health Surveillance

Intake Questions

1. What is the scope of surveillance — all occupational injuries/illnesses, a specific condition (e.g., silicosis, lead poisoning, work-related asthma), or a specific industry/occupation?
2. What NIOSH cooperative agreements fund the program (OHI, SENSOR, FACE, other)?
3. What data sources are available — workers' compensation claims, OSHA 300 logs, hospital discharge data, poison control, state reportable conditions, BLS CFOI/SOII, medical examiner/coroner data?
4. What industries are the primary employers in the jurisdiction — and which are highest risk?
5. What occupational health regulations apply — federal OSHA, state-plan OSHA, Mine Safety and Health Administration (MSHA)?
6. Is the jurisdiction a federal OSHA state or a state-plan state (which has its own OSHA program)?
7. What occupational health clinical capacity exists — occupational medicine physicians, industrial hygienists, employee health programs?
8. What employer engagement mechanisms exist — voluntary protection programs (VPP), industry associations, labor unions?

Required Documents

• NIOSH cooperative agreement work plan and performance measures
• OSHA recordkeeping standards (29 CFR 1904) and applicable health standards (e.g., 29 CFR 1910.1025 for lead, 29 CFR 1910.1053 for silica)
• NIOSH Occupational Health Indicators (OHI) data tables for the jurisdiction
• State workers' compensation database access and data dictionary
• Hospital discharge data with external cause (ICD-10-CM) and occupation coding
• State reportable conditions list (for occupational diseases — e.g., elevated blood lead levels, silicosis, asbestosis, occupational asthma)
• BLS Census of Fatal Occupational Injuries (CFOI) state data
• Existing occupational health surveillance reports for the jurisdiction

Step 1 — Establish Surveillance Data Systems

Build or maintain data feeds for the three pillars of occupational health surveillance:

Hazard surveillance (monitoring workplace exposures):

• OSHA compliance inspection data (OSHA Integrated Management Information System — IMIS/OIS) for citations and exposure measurements.
• Industrial hygiene sampling data from employer reports, NIOSH Health Hazard Evaluations (HHE), and state consultation programs.
• Elevated blood lead level (BLL) reports from the state Adult Blood Lead Epidemiology and Surveillance (ABLES) program. Reportable threshold: BLL ≥ 10 μg/dL (CDC/NIOSH reference; many states use ≥ 5 or ≥ 10 μg/dL).
• Pesticide exposure reports from poison control centers and the SENSOR-Pesticides program.

Health outcome surveillance (monitoring worker health effects):

• Hospital discharge and ED visit data coded with occupational external cause codes (ICD-10-CM: Y93, Y99) and industry/occupation fields where captured.
• Workers' compensation claims data — first reports of injury, claim type (medical-only vs. indemnity), diagnosis codes, industry/occupation.
• State reportable occupational disease registry (silicosis, asbestosis, mesothelioma, work-related asthma, occupational noise-induced hearing loss).
• Occupational fatality data: BLS CFOI (census of all work-related deaths), state medical examiner/coroner data, OSHA fatality reports.

Medical surveillance (individual worker monitoring):

• OSHA-mandated medical surveillance programs: lead (29 CFR 1910.1025), silica (29 CFR 1910.1053), asbestos (29 CFR 1910.1001), noise (29 CFR 1910.95), benzene (29 CFR 1910.1028), cadmium (29 CFR 1910.1027).
• Employer-provided medical monitoring data aggregated for population trends (with confidentiality protections).
• Healthcare worker exposure monitoring: sharps injuries (EPINet, OSHA Bloodborne Pathogens Standard), TB screening, respiratory fit testing.

Step 2 — Analyze Occupational Health Data

Calculate the NIOSH Occupational Health Indicators (OHIs) for the jurisdiction — a standardized set of 25+ indicators including:

• Fatal injuries: Work-related injury death rate per 100,000 workers (from CFOI). Stratify by industry (NAICS 2-digit), occupation (SOC major group), demographics, and cause of death.
• Nonfatal injuries: Rate of nonfatal occupational injuries and illnesses with days away from work (from SOII or workers' compensation). Stratify by industry and injury type.
• Pneumoconioses: Hospitalization rate for pneumoconioses (asbestosis, silicosis, coal workers' pneumoconiosis) per million workers. Source: hospital discharge data.
• Occupational asthma: Incidence of work-related asthma cases identified through SENSOR-Asthma or state reporting.
• Lead poisoning: Rate of adults with BLL ≥ 10 μg/dL per 100,000 employed adults. Source: ABLES.
• Carpal tunnel syndrome: Rate of median days away from work for carpal tunnel syndrome per 10,000 FTE workers. Source: BLS SOII.
• Amputations: Rate of work-related amputations. Source: workers' compensation, OSHA OSHA Severe Injury Reports.
• Musculoskeletal disorders: Rate of work-related MSDs with days away from work per 10,000 FTE. Source: BLS SOII.

Trend these indicators over 5-10 years. Compare to national OHI values published by CSTE/NIOSH. Identify industries, occupations, and worker populations with the highest rates.

Step 3 — Investigate Sentinel Events and Clusters

When surveillance detects a sentinel health event — a case of occupational disease or a fatality that signals a prevention failure:

• Fatality investigation (FACE program model): Conduct an on-site investigation of work-related fatalities to identify causal factors and prevention opportunities. Produce a FACE investigation report with: incident description, causal factors, recommendations, and industry-specific prevention guidance.
• Cluster investigation: When multiple cases of the same occupational disease emerge from the same employer, industry, or geographic area — investigate for common exposure. Example: a cluster of silicosis cases in countertop fabricators triggers industrial hygiene assessment, medical screening, and OSHA referral.
• OSHA referral: When surveillance data identifies a workplace with hazardous conditions or OSHA violations, refer to OSHA for compliance inspection. Document the referral and follow up on outcomes.
• NIOSH Health Hazard Evaluation (HHE): For complex workplace hazards, request a NIOSH HHE — an independent evaluation of workplace conditions with recommendations.

Step 4 — Intervene and Communicate

Occupational health surveillance is linked to prevention action:

• Employer notification: When an employer-specific pattern is identified (e.g., high amputation rate, elevated BLL cluster), notify the employer with findings and prevention recommendations. Follow state authority for employer notification.
• Industry-wide interventions: When an industry-wide hazard is identified, develop industry-specific prevention guidance. Partner with industry associations, labor unions, and OSHA consultation programs.
• Healthcare provider education: Many occupational diseases go unrecognized because providers do not take occupational histories. Educate providers through CME, clinical alerts, and occupational history prompts in EHR systems.
• Worker education: Provide hazard information to workers through outreach, OSHA's worker rights materials, and community partnerships. Partner with worker centers serving immigrant and contingent workers (who face the highest risks and have the least protections).
• Policy advocacy: Use surveillance data to support evidence-based OSHA standards. Provide public comment on proposed rulemaking with jurisdiction-specific burden data.

Step 5 — Report and Evaluate

• Produce the annual occupational health surveillance report with OHI data, trends, sentinel event investigations, and intervention outcomes.
• Report OHI data to CSTE/NIOSH per cooperative agreement requirements.
• Report ABLES data to CDC per the national ABLES program specifications.
• Evaluate the surveillance system using CDC's Updated Guidelines for Evaluating Public Health Surveillance Systems — assess sensitivity (are cases being captured?), timeliness (how quickly are events detected?), representativeness (which worker populations are missing?), and usefulness (does surveillance lead to prevention action?).
• Identify surveillance gaps: industries not captured by workers' compensation (self-employed, agricultural workers, gig economy), diseases with long latency (mesothelioma, occupational cancers), and populations excluded from standard data systems (undocumented workers, day laborers).

Checkpoint B — Surveillance Program Review

• Data systems established for hazard surveillance, health outcome surveillance, and medical surveillance
• NIOSH OHIs calculated for the jurisdiction and compared to national benchmarks
• Sentinel events investigated with documented findings and recommendations
• OSHA referrals made for identified workplace hazards
• Employer and industry notifications issued for identified patterns
• Annual surveillance report published
• OHI and ABLES data reported to CSTE/NIOSH/CDC per cooperative agreement
• Surveillance gaps documented with plans to address

Quality Audit

• CFOI data used for fatality analysis (not OSHA fatality reports alone — OSHA captures ~60% of work-related deaths)
• Workers' compensation data adjusted for known undercounting (WC captures an estimated 40-60% of occupational injuries/illnesses)
• ABLES BLL reporting threshold consistent with current CDC/NIOSH reference (check for state-specific thresholds)
• Hospital discharge data coded accurately for occupational causation (ICD-10-CM external cause coding is inconsistent — acknowledge undercount)
• Industry coded to NAICS and occupation coded to SOC for demographic analysis
• SENSOR case definitions applied consistently across reporting sources
• FACE investigation reports follow the standard format and are peer-reviewed before publication
• Confidentiality of employer-identifiable and worker-identifiable data maintained per state and federal law

Guidelines

• Occupational health data systematically undercounts the true burden of work-related injury and illness. Workers' compensation covers only a fraction, OSHA logs are employer-reported and compliance-driven, and occupational diseases with long latency (cancer, pneumoconiosis) are rarely attributed to work. Every occupational health report should acknowledge undercounting and describe its direction and magnitude.
• Immigrant workers, day laborers, gig workers, and workers in informal employment face the highest occupational hazards and are the least visible in surveillance data. Design outreach and data collection strategies that reach these populations specifically.
• The hierarchy of controls (elimination → substitution → engineering controls → administrative controls → PPE) must guide all prevention recommendations. Do not recommend PPE as the primary control when engineering controls are feasible.
• Occupational disease has long latency. Surveillance today detects exposures from 10-40 years ago (mesothelioma, silicosis, occupational cancer). Current exposure data predicts future disease burden. Both historical outcome data and current exposure data are needed for a complete picture.
• When referring an employer to OSHA, document the public health basis for the referral. Occupational health surveillance programs operate under public health authority, not enforcement authority — maintain the distinction.
• Silicosis is resurging in the U.S. due to engineered stone (quartz) countertop fabrication. Any case of accelerated silicosis in a young worker should trigger an industry-wide investigation in the jurisdiction.
• Escalate to the state epidemiologist or NIOSH regional office when: a work-related fatality cluster is identified, a novel occupational exposure is suspected (e.g., new chemical in use without toxicological data), or an employer retaliates against workers who report health concerns.