if a worker has to work five hours to produce the value needed to restore labour power per day, the labour power’s value is equivalent to the five hours of work. However, if the working day lasts ten hours, the additional five hours’ work will create value over and above that needed to restore labour power. Labour power creates surplus value. The ingenuity of capitalism, according to Marx, is that it can organize production to make workers generate unprecedented amounts of this surplus value.
