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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Labor demand ： ウィキペディア英語版 Labor demand In economics, labor demand refers to the number of hours of hiring that an employer is willing to do based on the various exogenous (externally determined) variables it is faced with, such as the wage rate, the unit cost of capital, the market-determined selling price of its output, etc. The function specifying the quantity of labor that would be demanded at any of various possible values of these exogenous variables is called the labor demand function.〔Varian, Hal, 1992, ''Microeconomic Analysis'', 3rd Ed., W.W. Norton & Company, Inc. New York.〕 ==Perfect competitor== The labor demand function of a competitive firm is determined by the following profit maximization problem: :$\backslash text\; \backslash ,\backslash ,\; pQ\; -\; wL\; -\; rK\; \backslash ,\backslash ,\; \backslash text\; \backslash ,\backslash ,\; Q,\; \backslash ,\; L,\; \backslash ,\; \backslash text\; \backslash ,\; K$ :$\backslash text$ :$Q\; =\; f\backslash ,(L,\; K),$ where ''p'' is the exogenous selling price of the produced output, ''Q'' is the chosen quantity of output to be produced per month, ''w'' is the hourly wage rate paid to a worker, ''L'' is the number of labor hours hired (the quantity of labor demanded) per month, ''r'' is the cost of using a machine (capital) for an hour (the "rental rate"), ''K'' is the number of hours of machinery used (the quantity of capital demanded) per month, and ''f'' is the production function specifying the amount of output that can be produced using any of various combinations of quantities of labor and capital. This optimization problem involves simultaneously choosing the levels of labor, capital, and output. The resulting labor demand, capital demand, and output supply functions are of the general form :$L(p,\; w,\; r),$ :$K(p,\; w,\; r),$ and :$Q(p,\; w,\; r).$ Ordinarily labor demand will be an increasing function of the product's selling price ''p'' (since a higher ''p'' makes it worthwhile to produce more output and to hire additional units of input in order to do so), and a decreasing function of ''w'' (since more expensive labor makes it worthwhile to hire less labor and produce less output). The rental rate of capital, ''r'', has two conflicting effects: more expensive capital induces the firm to substitute away from physical capital usage and into more labor usage, contingent on any particular level of output; but the higher capital cost also induces the firm to produce less output, requiring less usage of both inputs. Depending on which effect predominates, labor demand could be either increasing or decreasing in ''r''. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Labor demand」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.