[영문]Using a newly-created data set which measures legal change over time, the authors present evidence on the evolution of labour law in France, Germany, India, the United Kingdom and the United States. Their analysis casts light on the claim that qqqquot;legal originqqqquot; affects the content of labour law regimes. While some divergence between common law and civil law countries is found at the aggregate level, a more complex picture emerges from consideration of specific areas of labour law. The authors discuss the potential significance of this relatively new measurement-based approach to understanding the forces that shape the evolution of labour law.