Levis jeans hires workers for stitching in their factory. Target of stitching 100 jeans per week is given to the workers. Rate per piece is fixed at ₹ 50. But to motivate the workers, it announced that workers, stitching more than 100 jeans per week will get the rate of ₹ 55 per piece on all the jeans which they had stitched and deposited with the line managers. Parvej had a fast speed in comparision to others. By giving one hour extra, he stitched 120 pieces of jeans. So, he got 120 jeans @ ₹ 55 per piece, i.e., ₹ 6,600 in that particular week whereas his colleague Mushtaq stitched only 90 pieces and he got 90 pieces @ ₹ 50, i.e., ₹ 4,500 only.
Name the technique of management which is applied here to motivate the workers.