MARGINAL FACTOR COST: The change in total factor cost resulting from a change in the quantity of factor input, found by dividing the change in total factor cost by the change in quantity of factor input. Marginal factor cost, abbreviated MFC, indicates how a firm's total factor cost is affected by hiring one more or one fewer worker. Two related concepts are total factor cost and average factor cost. See also | marginal cost | marginal factor cost curve | input | factors of production | total factor cost | factor markets | average factor cost | marginal revenue product | perfect competition | factor markets | perfectly elastic | factor price | imperfect competition | monopsony | factor supply curve |
