Polygamy is common, with 39% of women living in such unions. This is sanctioned by law, which automatically permits polygamy unless spouses specify that this is unacceptable upon marriage. Although violence against women is prohibited, domestic violence is common. Female genital mutilation is also prohibited, but the practice is widespread and deeply rooted in tradition; 45% of Chadian women undergo the procedure, with the highest rates among Arabs, Hadjarai, and Ouaddaians (90% or more). Lower percentages were reported among the Sara (38%) and the Toubou (2%). Women lack equal opportunities in education and training, making it difficult for them to compete for the relatively few formal-sector jobs. Although property and inheritance laws based on the French code do not discriminate against women, local leaders adjudicate most inheritance cases in favour of men, according to traditional practice.