The Social Security Sector is funded and managed by "Obras Sociales" (Insurance Plans), umbrella organizations for Argentine worker's unions. There are over 300 Obras Sociales in Argentina, each chapter being organized according to the occupation of the beneficiary. These organizations vary greatly in quality and effectiveness. The top 30 chapters hold 73% of the beneficiaries and 75% of resources Health Care in Latin America. MSAS has established a Solidarity Redistribution Fund (FSR) to try to address these beneficiary inequities. Only workers employed in the formal sector are covered under Obras Sociales insurance schemes and after Argentina’s economic crisis of 2001, the number of people covered by these fell slightly (as unemployment increased and employment in the informal sector rose). In 1999, there were 8.9 million beneficiaries covered by "Obras Sociales".