The aim of this work has been to present a comparably cheap original working time standardization system data structure appropriate for Latvian sewing companies to set time norms for sewn articles and to store data in an e-database. During the working process the experience and traditions of Latvian sewing companies in setting time norms has been summarized and analysed; work organization problems have been studied, identified and systemized, performing a work organization efficiency analysis; problem solutions have been searched and developed. Besides, the choice of available computerized production process designing and management systems has been studied, analysed and compared; a research on the experience in using computerized production process designing and management systems in Latvian sewing companies has been performed; a working movement element function description for industry specialists has been developed in Latvian. It includes all necessary operation execution elements. Basing on the operation synthesis analysis data classification, systems are created to structure their processing; flow charts of working time expenditure determination modules and additional modules are created according to the previously created classification systems and their interaction during the data exchange process is determined. To develop a data coding systems mixed letter-digit symbol combinations have been applied to identify the necessary element of the indivisible operation synthesis process of sewn products. As a result of the analysis and systematization of the data necessary for the determination of working time expenditure, an outdoor clothing assortment group time norms setting three module system has been created to determine manual, machine-manual and machine work time expenditure, a hierarchical structure of the data to be processed/used, and appropriate classification levels have been created.