An economic concept that correlates to the onset of 3-D printing is the international labor market. Traditionally, the majority of U.S. companies have opted to outsource labor to lower their production costs. Firms will often hire more employers to increase productivity as long as the marginal cost, the cost of hiring on additional worker, is lower than the marginal benefit, the revenue and benefit that the firms will receive in return for hiring the worker. All firms essentially want to maximize their profit and they can do so using cheaper laborers in foreign, developing countries such as China. However, outsourcing is detracts from the U.S. economy since firms hire fewer employees domestically. 3-D printers can prevent that possibility and thus help companies grow since they would not need to heavily rely on either outsourcing or traditional manufacturing laborers. Since manufacturing firms can lower their production costs and produce more with the help of 3D printers, the aggregate supply of the nation increases, thereby lowering the price level for consumer goods. The decrease in prices would in turn decrease the value of a worker’s marginal productivity of labor, subsequently decreasing the demand of traditional or outsourced labor. ~~Another economic concept that comes into play with the labor demand topic is elasticity. Elasticity of demand can be represent by the percentage change in quantity demanded over the percentage change in price, which measures, in this situation, the wage-sensitivity of the employers’ demand . Compared to college graduates with supplementary technical skills, high school graduates or low-skilled laborers incur a flatter elasticity of demand. Though not all products can be created through 3-D printing, the new technology will alter traditional manufacturing methods and increase productivity within the