The problem of working time standardization attracts the attention of the managers of Latvian sewing enterprises since it is the main condition to reduce working time consumption. Many sewing companies are forced to produce goods in small series constantly changing and expanding the assortment. This raises the necessity to set such execution times at which the required result is gained with minimal loss of material and labor resource. One of the main labor management problems in sewing companies is the determination of working time expenditure – the choice of a determination method, precision and comfort of use. The choice of a working time expenditure determination method depends on several factors: the goal of the measurements, the level of precision, time, available software and hardware, personnel qualification, other resources available for measurements, like the availability of predetermined data (standards), costs of measurements. The determination of working time expenditure in Latvian enterprises in most cases is executed by adding and/or adjusting the specifics of the assortment to the standards worked out 20 or more years ago with the timekeeping method. The gathered data is stored in the company’s database for further usage. It is important that the data is persistent in time. The article reflects the results of the comparative analysis of the working time estimation methods.