Just in Time (JIT) is a strategy based on one simple rule: produce and order only when it is actually needed. No warehouses full of stock, no “just in case” inventory. It sounds like an accountant’s dream — but only when implemented properly can it unlock its full potential.
JIT originated in Japan, mainly within Toyota, and to this day it remains one of the foundations of lean manufacturing. But there’s a catch: it works brilliantly — until something breaks down in the supply chain.
Why do companies choose JIT?
- Less frozen capital – you do not need to keep warehouses full of parts.
- Lower storage costs – no need to pay for huge warehouse space.
- Greater flexibility – you can react faster to order changes because you are not tied to excess inventory.
- Better quality control – smaller production batches make it easier to detect issues before producing 10,000 defective units.
➡️ See also: Production Automation with Odoo – Is It Worth It and What Does It Cost?
How does Just in Time work in practice?
Make-to-order production
A customer places an order, the system sends a signal to production, and only then does the process begin.
Close cooperation with suppliers
Materials arrive exactly when they are needed — not a month earlier.
System integration
JIT cannot function without integration between ERP, WMS, and production systems.
Real-life examples
Toyota
The pioneer of JIT. Thanks to this method, the company became a benchmark for operational efficiency for decades.
Personalized e-commerce
A customer orders a customized printed product, and production starts only after clicking “buy now”.
Small manufacturing business
Instead of producing 1,000 mugs for warehouse stock, the company manufactures 50 per day based on actual orders.
The most common JIT challenges
No backup plan
A delayed shipment can stop the entire production line.
Too few suppliers
If you rely on one supplier and they fail, the whole project can come to a halt.
Lack of real-time data
Without ERP systems and automation, JIT simply cannot work effectively.
Global crises
Pandemics, wars, or disruptions such as the blockage of the Suez Canal can quickly turn “Just in Time” into “Just in Trouble”.
➡️ That is why it is also worth understanding the most common ERP implementation mistakes: 5 Biggest Mistakes During Odoo ERP Implementation
How to implement JIT – practical tips
Start with process analysis
Identify where overproduction creates the biggest waste.
Invest in an ERP system
Without Odoo ERP or another system that connects production, purchasing, and warehouse operations, JIT will not work efficiently.
Build strong supplier relationships
Suppliers should become strategic partners, not just “vendor X” issuing invoices.
Test on small batches first
Before applying JIT across the entire production process, test it on a single workflow or product line.
FAQ
Is JIT suitable for small businesses?
Yes — especially for simpler processes and when suppliers are located nearby.
Is JIT risky?
Yes, if you do not have alternative suppliers or a contingency plan.
Does JIT always reduce costs?
Not necessarily. In unstable supply chains, downtime costs may exceed inventory savings.
What is better: JIT or traditional inventory management?
It depends on the industry and supply chain stability. In practice, many companies combine both approaches — for example, using JIT for standard components while keeping safety stock for critical parts.