TYPE_NATURE_PAIEMENT = u"Accessoire"
TYPE_NATURE_CHARGES = u"Charges"
TYPE_NATURE_TRAITEMENT = u"Traitement"
-HEADER_SEPARATOR = ('sep', ods.Separator, {'columnwidth': '0.4cm'})
+HEADER_SEPARATOR = ('sep', ods.Separator(), {'columnwidth': '0.4cm'})
class MasseSalariale():