Labor cost - The worker's labor-power is, under capitalism, a commodity, which can be bought and sold. When the capitalist hires the worker, the capitalist pays not for a certain labor but rather for the worker's labor-power
In Capitalism the amount of money paid to a worker has nothing to do with how much value/money he produces. Salary/Labor-cost is dependent on availability of labor, there will always be an excess supply of labor in the market and consequently salary will be low. You and me are paid salaries disproportionate to the billing cost.
Marx argued that the wage - the price of the labor-power - should reflect the price of the commodity produced when sold on the market
Communism - for the ignorant - keep your mind open and try to understand what Marxism is. While reading do not look at the stereotype communist that is created in your mind by the Capitalist media.
"Pure communism" in the Marxian sense refers to a classless, stateless and oppression-free society where decisions on what to produce and what policies to pursue are made democratically, allowing every member of society to participate in the decision-making process in both the political and economic spheres of life.