is the class that owns the means of production and derives a passive income from their operation. Examples of the capitalist class include business owners, shareholders and the minority of people who own factories, machinery and lands. Countries considered as the capitalist countries include Australia, Canada and other nations which hold a free market economy. In modern society, small business owners, minority shareholders and other smaller capitalists are considered as Petite bourgeoisie according to Marx's theory, which is distinct from bourgeoisie and proletariat as they can buy the labour of others but also work along with employees. In contrast, the proletariat, or working class, comprises the majority of the population that lacks access to the means of production and are therefore induced to sell their labour power for a wage or salary to gain access to necessities, goods and services. According to Marx, wages and salaries are considered as the price of labour power, related to working hours or outputs produced by the labour force. At the company level, an employee does not control and own the means of production in a capitalist mode of production. Instead, an employee is performing specific duties under a contract of employment, working for wages or salaries. As for firms and profit-seeking organizations, from a personnel economics perspective, to maximize efficiency and productivity there must be an equilibrium between labour markets and product markets. In human resource practices, compensation structure tend to shift towards pay-for-performance bonus or incentive pay rather than base salary to attract the right workers, even if conflicts of interest exist in an employer-worker relationship. To the question of why classes exist in human societies in the first place, Karl Marx offered a historical and scientific explanation that it was the cultural practice of ownership of the means of production that gives rise to them. This explanation differs dramatically from other explanations based on "differences in ability" between individuals or on religious or political affiliations giving rise to castes. This explanation is consistent with the bulk of Marxist theory in which Politics and Religion are seen as mere outgrowths (superstructures) of the basic underlying economic reality of a people. Related terms Factors of production are defined by German economist Karl Marx in his book Das Kapital as labor, subjects of labor, and instruments of labor: the term is equivalent to means of production plus labor. The factors of production are often