Recent years have seen a rapid increase in the number of women joining the paid labor force. In order to develop their careers, working women often marry later and have fewer children. Although husbands are increasingly sharing in house work, many women still carry a double load as they continue to fulfill their traditional responsibilities for homemaking and child rearing. Women have demonstrated particular dedication, competence and skill in voluntary social activities. They have brought about changes in the social service delivery system, and created large organizations, many associated with international groups having similar aims. Women in business and the professions have formed organizations to help their economic positions.