title: The Pennsylvania certified safety committee program: an evaluation of participation and effects on work injury rates.
abstract: BACKGROUND
  Since 1994, Pennsylvania, like several other states, has provided a 5% discount on workers' compensation insurance premiums for firms with a certified joint labor management safety committee. This study explored the factors affecting program participation and evaluated the effect of this program on work injuries.
  
  
  METHODS
  Using Pennsylvania unemployment insurance data (1996-2006), workers' compensation data (1998-2005), and the safety committee audit data (1999-2007), we conducted propensity score matching and regression analysis on the program's impact on injury rates.
  
  
  RESULTS
  Larger firms, firms with higher injury rates, firms in high risk industries, and firms without labor unions were more likely to join the safety committee program and less likely to drop out of the program. The injury rates of participants did not decline more than the rates for non-participants; however, rates at participant firms with good compliance dropped more than the rates at participant firms with poor compliance.
  
  
  CONCLUSIONS
  Firm size and prior injury rates are key predictors of program participation. Firms that complied with the requirement to train their safety committee members did experience reductions in injuries, but non-compliance with that and other requirements was so widespread that no overall impact of the program could be detected.
authors.affiliation: RAND Corporation, Boston, MA 02116, USA. hliu@rand.org
authors.forename: Hangsheng
authors.initials: H
authors.lastname: Liu
authors.forename: Rachel M
authors.initials: RM
authors.lastname: Burns
authors.forename: Agnes G
authors.initials: AG
authors.lastname: Schaefer
authors.forename: Teague
authors.initials: T
authors.lastname: Ruder
authors.forename: Christopher
authors.initials: C
authors.lastname: Nelson
authors.forename: Amelia M
authors.initials: AM
authors.lastname: Haviland
authors.forename: Wayne B
authors.initials: WB
authors.lastname: Gray
authors.forename: John
authors.initials: J
authors.lastname: Mendeloff
mesh_terms: D000062:Accidents, Occupational / Q000706:statistics & numerical data*; D026683:Advisory Committees / Q000592:standards / Q000706:statistics & numerical data*; D006801:Humans; D016015:Logistic Models; D009784:Occupational Diseases / Q000453:epidemiology*; D016272:Occupational Health / Q000706:statistics & numerical data*; D010414:Pennsylvania / Q000453:epidemiology; D015397:Program Evaluation; D057216:Propensity Score; D018570:Risk Assessment; D012307:Risk Factors; D017751:Safety Management / Q000592:standards / Q000706:statistics & numerical data*; D035141:Voluntary Programs