Two systematic reviews were done with researchers and ergonomists, and input from occupational health and safety stakeholders. The review on PE effectiveness focused on peer-reviewed literature which reported on evaluating PE on worker health outcomes. Quality criteria addressed internal and external validity. Data extraction and best evidence synthesis focused on three outcomes: Lost days/sickness absence, worker compensation costs, symptoms/disorders. The review on PE process included peer-reviewed and grey literature describing PE. Documents were relevant if they described a PE intervention, and quality criteria were adapted for non-scientific documents. Data was synthesized according to most often reported process and implementation approaches. An evidence-based tool for PE implementation was developed by review team members with input from stakeholders from across Canada. Stakeholders suggested the format and provided feedback about the content. The evidence came from the review on PE process and was augmented by case studies.