The purpose of this essay is to make the characteristics of the wage administration in postwar Japan clear, comparing to the characteristics in the prewar. Its contents are as follows: (1) the concepts and structure of the wage administration, (2) the characteristics of the wage in Japanese business, (3) the characteristics of personnel administration in postwar Japan, (4) conclusion - the characteristics of the wage administration in postwar Japan. The writer think that the wage administration's characteristics are determined mainly by the wage determination's system and the degrees of the personnel administration's development. And therefore this essay describes the characteristics of the wage and personnel administration in Japanese business in the previous parts. In Japan there has not ever been general wage-rate, but the wages are determined in extent of each enterprise's ability to pay. In this result, a. sum of wage for each employee is determined in accordance with the individual living conditions of him. And also, the, development of work-standardization is so imperfect that the scientific incentive wage does not develop sufficiently. Concerning to the personnel administration in the postwar, it has been ever tinged with the paternalistic features as same as in the prewar, but however some of the personnel management plans, for example merit rating, training for supervisors and job evaluation's methods, become to take modern methods. Such features has influence upon the wage administration. In this way, the wage administration in the postwar proceeds to have the prewar characteristics, while it begins to have some modern features; in other words, it may say what the wage administration has two characters is the principal characteristic in the postwar.