Small and medium enterprises (SMEs) in Indonesia have played a significant role in absorbing labour, increasing the number of business units and supporting household income. PT XYZ is a medium-sized informal industry engaged in convection services. Convection business is a line of business that produces clothes in bulk that are tailored to market needs. Several factors such as the intensity of lighting or light and the experience of the workforce can be factors that affect the results of sewing production in convection services. In this study, an experimental design was carried out using a three-way ANOVA and analyzed to determine whether there was a relationship between independent variables (light intensity, work experience and shifts) and the dependent variable (sewing production results). Observations were carried out for 6 days with 80 workers with work experience and different lighting conditions for 12 hours of work with 2 shifts. Based on data processing, it can be concluded that there is an effect between light intensity and work experience and there is an interaction between light intensity and work experience on the number of sewing final products.