Sewing Work aids is an essential tool of any garment manufacturer/ producers special in the sewing section. It is additional working parts that are attached with the sewing machine to increase production, to improve product quality and also help to decrease manufacturing cost, but there no access to buy in the local market for local garment producers, it is time consume to import from outside and needs hard currency. The aim of this study is to design and developed sewing work aid for hemming to substitute the imported one, to increase productivity and improve quality for the local garment producer to win in the global market. In this thesis work, the manufacturing sequence of sewing work aid for hemming, types of machines used for testing the functionality of the new developed work aid, the number of workers used in a sewing to compare the productivity sewing with and without using sew work aid, standard minute value (SMV) and daily production of those related garments or stitching activities are enlisted. Data are collected while the garments are produced without using work aid and also when those same garments/activities are produce with using work aids. This thesis project demonstrate that if work aids are used effectively operation cycle time can be reduced than existing cycle time and have positive effect on SMV, production and product quality and also help to decrease manufacturing cost. At the end of this thesis work it shows that sewing work aids can increase up to 8.56% workers or operator efficiency of sewing activity for the selected product and it increase the productivity by 42.43% in average, purchasing cost of sewing work aid is discount of 1,012 ETB when manufacture locally in Ethiopia with the same function. From those result, it is conclude that productivity, SMV of each activities, production cost, purchasing cost of sewing work aid, product quality and operators work load in garment production is affected by sewing work aid so it needs to design and developed sewing work aid locally in Ethiopia to maximize productivities, reduce production cost, improve product quality, reduce operators work load and substitute imported sewing work aid.