Job Description. The alterations department completes patchwork, hemming, tapering, and other customizations to our customers’ clothing. Alters, repairs, or fits garments. Fits garments on customers to determine required alterations. Sews garments, using needles and thread, and sewing machines. Measures parts, such as sleeves or pant legs, and marks or pin-folds alteration lines. Takes up or lets down hems to shorten or lengthen garment parts. Re...