Productivity and Profitability Payoffs of Lean Operations
Manufacturing plants in emerging markets experience substantial waste, high defect rates, and excessive inventory holdings that suppress total factor productivity and operating margins.
Picture this
Imagine a car repair garage where mechanics spend half their time searching through unsorted piles of spare parts and re-fixing mistakes made yesterday. By organizing the parts shelves, labeling items, and checking engine repairs daily, mechanics stop repeating mistakes and spend less money buying duplicate parts. Consequently, the garage repairs more cars per week using fewer total labor hours and less stored inventory.
What the evidence says
Adopting lean operational practices raised total factor productivity (TFP) by 17% in the first year (p = 0.061; IV coefficient = 0.477, p < 0.05), reduced quality defects by 43%, cut yarn inventory by 21.7%, and generated $325,000 in net annual profit per plant.
- Who
- N = 20 experimental plants (14 treatment, 6 control) across 17 large Indian textile firms [40, 41].
- How
- Randomized Controlled Trial (RCT) evaluating weekly plant performance metrics over 100+ weeks using Intention-To-Treat (ITT) and Instrumental Variables (IV) estimators [12, 42-44].
What to do
Sort, label, and establish computer-logged location tracking for raw material inventory while establishing strict reordering norms to eliminate dead stock.
From the source
"We find that adopting these management practices raised productivity by 17% in the first year through improved quality and efficiency and reduced inventory, and within three years led to the opening of more production plants."
541 Management in India QJE.pdf