Time and motion studies' effects on the apparel and textile industries increase their profitability and help to define the standard minute value (SMV), which is then used to clear traffic jams, reduce downtime, and increase production. The main goals of this research are the determination of the procedures which are appropriate for the garment production process. The second aim is to demonstrate the benefits and drawbacks of employing those tactics for the factory. The final option is to illustrate how the PERT and CPM affect the competitiveness of the entire garment sector. The Line balancing with CPM and PERT resulted in this work reduced the manpower from 17 to 11, an increase in line efficiency from 49 to 77.5 percent, and a reduction in production costs from 75 to 46 BDT for a basic T-shirt manufacturing process.

Keywords : Critical Path Method (CPM), PERT, Textile Apparels, Industries, Manufacturing.