Working conditions, maternity legislation, and preterm birth.

The review of the scientific literature on the role of employment-related physical activity suggests that prolonged standing and long working hours may increase the risk of preterm delivery. Although maternity legislation in many European countries has regulated work schedules and working conditions for pregnant women, none of the European countries except for France seems to have experienced a reduction in preterm rates. France has had both a comprehensive maternity legislation and a national program specifically aimed to reduce preterm birth. Despite the lack of reduction in preterm rates, paid maternity leave, guaranteed job protection, and regulation of hazardous working conditions remain a desirable societal goal for any industrialized nation.