This guidebook serves as a comprehensive resource for Mars Suppliers to understand and implement the Mars Supplier Code of Conduct. It outlines the expectations for responsible employment, environmental stewardship, and business integrity and ethics. The guidebook is structured to assist suppliers in conducting human rights and environmental due diligence, detailing processes for identifying, assessing, preventing, and addressing risks related to labor and environmental issues. It emphasizes the importance of having adequate policies, procedures, and training in place to ensure compliance with the Code. The document also provides good practices for managing risks, including communication and training strategies for employees and suppliers. Additionally, it discusses the significance of tracking and reporting progress in addressing human rights and environmental risks. The guidebook is intended for all suppliers of goods or services to Mars, including their subcontractors, and aims to facilitate alignment with the expectations outlined in the Supplier Code.