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O2C.3 What predicts a secondary absence following return to work among workers’ compensation claimants in victoria? Results from a longitudinal cohort

Time taken to first return to work (RTW) is often a primary endpoint for studies among injured workers. However, studies using administrative workers’ compensation claims data have documented that a substantial proportion (approximately one half) of claimants will incur a subsequent period of wage replacement. Unfortunately, workers’ compensation data is limited in the information collected to better understand which claimants are more likely to have a subsequent absence from work. The objective of this study is to address this gap using a cohort of workers’ compensation claimants in the Australian state of Victoria. The sample for this study is drawn from a longitudinal cohort of workers’ compensation claimants (n=869). For the purpose of this analysis we focused on those claimants who had returned to work (self-reported) at the baseline interview, which was conducted approximately 4 months after the injury had occurred (n=372). Independent variables examined included if the respondent was working on full or partial duties, currently receiving health care for their injury, type of injury (musculoskeletal versus psychological), co-worker responses when they returned to work (measured using nine questions), and work limitations, measured using an abbreviated form of the work limitations questionnaire. A total of 205 respondents (55% of the sample) reported a subsequent absence from work when interviewed 6 months later. All independent variables, with the exception of injury type, were associated with subsequent absences from work. In a multivariable model, only working modified duties and greater limitations remained statistically significant. The results of the current study help inform our understanding of trajectories in RTW and factors, measured after the first RTW, which may be associated with a subsequent absence from work. These findings can be integrated into RTW programs to help more workers achieve sustainable RTW following a work injury.