earn minimum wages, because most jobs are somewhat specialized and are classified at higher wage levels. The wage ratio of a cooperative is decided periodically by its worker-owners through a democratic vote. Compared to similar jobs at local industries, Mondragon managers' wages are considerably lower (as some companies pay their best paid managers hundreds of times more than the lowest-paid employee of the company) and equivalent for middle management, technical and professional levels. Lower wage levels are on average 13% higher than similar jobs at local businesses. Spain's progressive tax rate further reduces any disparity in pay. These comparatively low wages can make it very difficult to recruit managers from investor-owned firms. Business sectors Mondragon Corporation operates in four areas: finance, industry, retail, and knowledge, with the latter distinguishing Mondragon from other business groups. In 2013, the corporation posted a total revenue of over €12 billion (roughly US$16 billion), and employed 74,061 workers, making it Spain's fourth-largest industrial and tenth-largest financial group. Finance This area includes the banking business of Laboral Kutxa, the insurance company Seguros Lagun Aro, and the Voluntary Social Welfare Body Lagun Aro, which had an asset fund totaling €5,566 million at the end of 2014. The yield obtained from this fund is used to cover long-term retirement, widowhood, and invalidity benefits, complementary to those offered by the Spanish social security system. Industry The corporation's companies manufacture consumer goods, capital goods, industrial components, products, and systems for construction, and services. The latter includes very diverse business groups such as Abantail: Adaptive design optimization, Alecop: Engineering training, LKS Consultores: Attorneys etc., KREAN: Architects and engineers. MCCTelecom: Telecommunication engineering. Mondragon Lingua: Translation and language schools, Mondragon Sistemas: Automation, Industrial Computing and Telecommunications. Ondoan: Turnkey projects in the energy and environmental sector. In the leisure and sports area, it manufactures Orbea bicycles, exercise equipment and items for camping, garden and beach. In capital goods, Mondragon posted a turnover of €976 million in 2009 and is the leading Spanish manufacturer of machining (Danobat Group) and sheet metal forming (Fagor Arrasate Group) machine tools. These machines are complemented by automation and control products for machine tools, packaging machinery, machinery for automating assembly processes and processing wood, forklift trucks, electric transformers, integrated equipment for the catering industry, cold stores, and refrigeration equipment. Specifically focusing on the automotive sector, the corporation also manufactures a wide variety of dies, molds and tooling for casting iron