The main goal of this article is to analyze the production capacity of Iran's first tier export industries and their role in creating sustainable employment. In this article, we compared four different export industries (cement, gypsum, lime, petroleum products, stone, basic metals) which are the leading industries in the field of export production. In order to determine the optimal level of production capacity in export industries with the three-digit ISIC.Rev.3 code, the Translog cost function was used. Optimum production is the equality of elasticity of scale or elasticity of cost (inverse of elasticity of scale) with one. In order to obtain the optimal production level, a production level was obtained from the equality of scale elasticity or cost elasticity with one, which naturally satisfies the first condition, then the second condition was obtained in order to investigate the research. The results of the analysis showed that the amount of employment in metal industries increased by 4.5% during the period (1380-1397). If the employment rate in oil products industries during this time period was more than 2.5%. There is a significant difference between the employment rate of metal industries and oil products industries. Also, the results of the analysis showed that there is a direct relationship between the production capacity and the employment rate. The amount of employment in the cement, plaster, and lime industries increased by 6 percent during the years under review (1380-1397) with the increase in production capacity. If the amount of employment in the stone indu