This glossary provides definitions for traceability efforts related to labor rights and social responsibility in global supply chains. In some cases, the definitions have evolved over time because their application has grown or changed. In other cases, there may be alternative definitions, particularly when applied in other fields and different contexts. In a few cases, there are differences of opinion on what is the most accurate definition. As a result of potentially evolving definitions, this glossary is subject to an ongoing process of review and revision.