Financial Times (23.05.2016) America’s middle class is losing ground. Wage stagnation, economic insecurity and rising inequality have become the defining issues of the presidential campaign. Yet as politicians search for a response, they must also grapple with the changing nature of employment. The “fight for $15”, the nationwide campaign for a big rise in the federal minimum wage, is of little relevance to the growing numbers working without the traditional relationship of employer and employee in the so-called gig economy.