Ensuring the safety and health of workers throughout the supply chain can be a challenge, especially when suppliers operate in countries with inadequate safety protection. This document calls on business to invest in positive OSH measures to improve long term value and provides guidance for companies and their suppliers on improving safety and health in the workplace. It describes how promoting better occupational safety and health systems protects the well-being of workers, while reducing operational risks for both suppliers and buyers. Also included are practical examples from individual companies and descriptions of partnerships, initiatives and resources to assist companies in improving occupational health and safety.