Domestic service, it is true, is not a wealth-producing occupation, but it is wealth-consuming probably beyond any other employment. The profit, therefore, must be negative, that is, economy in the use of time, materials, and appliances for work. It is in precisely these ways that profit sharing has been most successful, and the wage system most unsatisfactory. Under the wage system the employer of domestic labor pays for time rather than for quality of service, and employers therefore constantly complain that employees do not accomplish one half as much as they should, and employees that employers exact twice as much as can be done. Neither party to the contract under the wage system can have a true notion of the working value or the money value of time; thus it is not strange that the one requires more than can be performed, and the other does less than might be reasonably demanded. The same ignorance and carelessness prevails in the use of materials. The employer may provide the best the markets afford, but if the cook has never had brought home to her a realizing sense of the money value of these materials, she is not altogether to blame if she fries doughnuts in butter costing fifty cents a pound, and makes angel food daily when eggs are forty cents a dozen. The employer may also provide the finest of furnishings for the dining-room and china closet, but if the maid-of-all-work does not associate a money value with these furnishings, she uses table napkins for holders, and carelessly drops fine china into an iron sink. From the selfish point of view the chief interest of the employer is to keep the bills down and to get the greatest possible amount of service even at the cost of the greatest expenditure of human strength; among employees, it is to do sufficient work to retain a good place, and to use whatever materials are most convenient.