research into the completeness of the survey of occupational injuries and illnesses
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Research into the Completeness of the Survey of Occupational Injuries and Illnesses. William Wiatrowski Bureau of Labor Statistics June 10, 2013. Today’s Roadmap. Bureau of Labor Statistics. Statistical arm of US Department of Labor Employment and unemployment Consumer and producer prices - PowerPoint PPT PresentationTRANSCRIPT
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Research into the Completeness of the Survey of Occupational Injuries and
Illnesses
William WiatrowskiBureau of Labor Statistics
June 10, 2013
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Today’s Roadmap
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Bureau of Labor Statistics
Statistical arm of US Department of Labor Employment and
unemployment Consumer and
producer prices Wages, benefits Productivity Workplace safety
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Early workplacesafety data
BLS worker injury data Since early 1900s Voluntary
employer reporting
Concerns about compliance
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Occupational Safety and Health Act of 1970
Department of Labor to provide statistics Mandatory employer
reporting Survey of
Occupational Injuries and Illnesses (SOII) -- counts and rates by industry and state
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Concerns – 1980s Lack of consistent
national data on workers involved and circumstances of injury
Fatal work injuries not easily captured through sample survey
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1990s expansion Case and
demographic details For cases with
days away from work
Census of fatal occupational injuries
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Concerns – 2000s Research studies
Comparisons with workers’ compensation
Rosenman, Boden/Ozonoff
SOII captures 32-75 percent of cases
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Congressional Action Hearings Research funding
BLS Occupational
Safety and Health Administration (OSHA)
National Institute for Occupational Safety and Health (NIOSH)
GAO study9
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BLS research Confirm
undercount Identify sources
of undercount Measure
undercount Fix undercount
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Today’s Roadmap
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What is the SOII? Establishment
survey OSHA-recordable
cases Includes
employers not otherwise required to keep records
Collected soon after end of the year
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SOII output “Summary” data
-- counts and rates By detailed
industry By state By case type
– Days away– Restricted work– Other
13Rate per 100 full-time equivalent workers
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SOII output “Case and
demographic” data About the worker
– Occupation– Age, sex, race
About the case– Type of injury– Event, source
Days away from work cases
Pilot study of restricted work cases
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Unique aspects of the SOII
Definitions come from OSHA
Consistent data across states
Worker injuries and illnesses are infrequent events Rate 3.5 cases per
100 full-time equivalent workers
Many employers report zero cases
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Known limitations of SOII
Limited data on workplace illnesses
No data for Federal government, small farms, self-employed
Details only for cases with days away from work
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Possible limitationsof SOII
Undercount? Cases reported
elsewhere but not in SOII
Cases reported neither in SOII nor in other systems
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Defining the undercount
Total public burden undercount
SOII undercount
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Filters Event occurs
Worker perceives injury Worker acknowledges
work-related Desirable to report? Reports
Supervisor Injury is legitimate Injury is work-related Meets OSHA definitions Allows time off or
restricted duty Records injury on OSHA
log Employer in BLS sample
Injury transferred to SOII
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Today’s Roadmap
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BLS undercount research – 2009-2012
Matching SOII and workers’ compensation data
Multisource enumeration
Employer interviews
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SOII-WC matching Compare SOII
case data to workers’ compensation data Days away Beyond WC
waiting period
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SOII-WC matching Compare SOII
case data to workers’ compensation data Days away Beyond WC
waiting period
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SOII-WC matching Compare SOII
case data to workers’ compensation data Days away Beyond WC
waiting period
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SOII-WC matching Compare SOII
case data to workers’ compensation data Days away Beyond WC
waiting period
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SOII-WC matching Compare SOII
case data to workers’ compensation data Days away Beyond WC
waiting period
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SOII-WC matching Three additional
states Matching issues
Employer identification
Time of event Consistent coding
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Results SOII appears to capture everything
on the OSHA log Evidence of undercount
40%-70% SOII capture rate Varies by method, state Possible bias
Types of cases more likely to be missed by SOII Ex: late year cases
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Multisource enumeration
Beyond SOII and WC
Identify all cases, not just OSHA recordable
Data from emergency department visits, hospital discharges, others
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Results Sources lack “work” information Work v medical Data sources inconsistent across
states Value in multisource for State-
based surveillance and topical research
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Employer interviews SOII respondents –
variation by size, industry Explore reasons for
differences in OSHA logs, SOII, and State WC claims
Loosely structured questionnaire, in person visits
Qualitative details; not statistical sample
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Results Employer
confusion, training
Differences in SOII and WC reporting
Treatment of temp help workers
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Today’s Roadmap
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Consensus recommendations
Work with OSHA to enhance recordkeeping Improve training
Future research Undercount over
time Variations by
state, industry Employer
attributes and practices
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Consensus recommendations
Improve coding consistency of SOII
Expand SOII data collection Ex: union status
Supplement SOII Household data
Publicize research efforts and results
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New round of research Expanded
interviews – 4 states Generalizable data
on employer practices
Match WC-SOII for 12 years
Pilot test auto-coding Improve consistency
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Other SOII enhancements
Publish hospitalization data On OSHA log;
reviewing data quality
Expand data for cases of job transfer/restriction First test results
published April 2013 More to come
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Communications Presentations
CSTE National Safety
Council APHA
Publish research results
Expand BLS website Articles FAQs More
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Future efforts Expand auto-
coding Follow-back
studies Work with OSHA
to improve employer understanding
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Contact Information
William Wiatrowski
Occupational Safety and Health Statisticswww.bls.gov/iif202-691-6300