Abstract:Benefiting from the extensive claims data available from the Insurance Research Council Closed Claims Surveys from 1977 to 1997, we investigate changes in claiming patterns among automobile third party claimants. Using state tort reform variables as controls, we find results consistent with general public opinion that lawyer use and claim filings have increased over the study period. Furthermore, the reforms themselves show effects consistent with expectations. Passage of joint and several liability limitations, caps on damages, and punitive damages reforms all reduce both attorney use and claim filing. Insurability of punitive damages and no-fault legislation lead to higher attorney use and claim filing. Using state variables as controls instead of reforms, however, we find that claim filing was higher in 1977 than 1997 and lawyer use statistically unchanged between the two periods. One possible cause for the differing results is that the tort reform variables are picking up a time effect, as observed in the mean values over the three data periods studied. To identify the marginal effect of the reform, we also ran the analysis with reform/data year interaction terms. In this third analysis, we find that use of attorneys and filing of legal claims has increased over time, and that most of the reforms have been effective in dampening both of these behaviors.