The EU ban on conventional battery cages for laying hens, implemented in 2012, provides lessons for the global welfare movement about how major system transitions are achieved.
The EU battery cage ban is both a welfare achievement and a lesson in implementation. The long transition period — 13 years — provided adequate time for producer investment but also allowed slow movers to delay. The compliance challenges demonstrated that welfare legislation requires enforcement resources and political will, not merely a legal mandate. The production shift to non-EU countries with lower standards is a persistent problem without international trade standards. Nevertheless, the ban has protected billions of hens from the most severe confinement, demonstrating that major welfare legislation is achievable and effective.