Ergonomic factors were found to be predictive of back pain, as was fear of pain. The results for pain of a type that could be related to injury were not presented. There were some doubts about the exposure variables, which were measured by self report.
Evidence from:
A Van Nieuwenhuyse et al. OEM (2006) Vol.63 p 45 – 52
“The role of physical workload and pain related fear in the development of low back pain in young workers: evidence from the BelCoBack Study; results after one year of follow up”
Large changes in liability exposure are unlikely unless fear of injury is made more likely.
Further detail: