In weighing the pros and cons of the hiring of workers, the employer does not ask himself what the worker gets as take-home wages. The only relevant question for him is, What is the total price I have to expend for securing the services of this worker? In speaking of the determination of wage rates, catallactics always refers to the total price which the employer must spend for a definite quantity of work of a definite type, i.e., to gross wage rates. If laws or business customs force the employer to make other expenditures besides the wages he pays to the employee, the take-home wages are reduced accordingly. Such accessory expenditures do not affect the gross rate of wages. Their incidence falls entirely upon the wage-earner. Their total amount reduces the height of take-home wages, i.e., of net wage rates.