There are increasing concerns about animal welfare in agriculture, so four pig-fattening systems were evaluated for animal welfare and for productivity. Welfare was evaluated by observation, pen condition scoring, and equipment (feeders, ventilation etc.) records. The four types of systems were an improved conventional system, a sloped floor system, an open front stable, and an outdoor exercise stable. The outdoor access (open front and exercise stable) increased lying, and decreased behaviour disorders. Straw reduced injuries, but required more work per animal. All systems ended with a good score for productivity and animal welfare, but the open front and outdoor exercise yards were the best, and also were scored the highest for animal preference.