This study aims to determine the productivity value of construction workers of PT Bima Natisa Graha red brick installation work on the construction project of housing units in residential area projects, to determine the factors that hinder the productivity of construction workers for red brick installation and to determine the productivity value of construction workers in red brick installation work after improving the factors that hinder the productivity of construction workers in red brick installation. The method to measure the productivity of construction workers in the installation of red bricks with the time study method. Time study is a method of measuring labor productivity in the field by determining the standard time of a job. The results of the study can be concluded as follows: (1) The productivity value of construction workers for red brick installation work on a housing construction project implemented by the contractor PT Bima Natisa Graha on a type 60 housing unit with a time study method of 0.378 M2 / OJ (2) Factors that hinder the productivity of construction workers are site managers, implementers and foremen from PT. Bima Natisa Graha who is rarely seen at the project site which should be in charge of giving directions in carrying out work in the field to workers so that workers joke more, talk a lot, smoke a lot, play a lot of cellphones and have coffee during working hours, this condition occurs because there is no reprimand and direction from the authorities. (3) The productivity value of construction workers for red brick installation work on a housing construction project carried out by the contractor PT Bima Natisa Graha on a type 60 housing unit with the time study method after productivity improvement is 0.496 M2 / OJ.