The influence of physical work conditions on adverse pregnancy outcomes is in Denmark guided by recommendations from the Danish Labour Inspection. In this review, the literature on physically demanding work and its influence on pregnancy outcomes is examined. There is no evidence for posing accurate weight limits designed for pregnant women carrying heavy loads. In relation to work with standing or walking postures, it seems that especially prolonged standing is critical for pregnant women. There is no study that deals with the influence of pulling or pushing on pregnancy outcomes.