"[Capitalism] requires a certain level of unemployment to function. If there were enough work to go round, no worker would worry about losing their job, and all workers could demand higher wages and better conditions. The ever-present spectre of unemployment, on the other hand, enables employers to dictate conditions. Equally, in times of severe crisis this ‘reserve army’ of unemployed people can be called into employment as and when the economy requires it. This system of deliberate unemployment needs ways to mark who will work and who will be left unemployed. In our society this is principally achieved through race, class, gender and disability."