Lean Principle - 8 Categories of Waste

The first step in improving labor productivity in construction is improving everyone’s ability to see the waste.

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Field Productivity: Lean Principle - 8 Categories of Waste

The human mind is amazing at pattern recognition - that is how our brains process the world.  Consider simple categories of threat vs. non-threat that keeps us alive. Diving deeper into categories of food - bitter (many poisons) or sweet (yummy + quick energy).  Colors - there are millions of them and they start with high levels of primary colors and get subsequently broken down into more detail.  

This level of categorization helps keep us alive and allows us to communicate with each other.  We can all look at a stop sign and say “red” where a computer would communicate ‘#e70707” as the specific color.  

We know that our role is to create the “Perfect Day” and we do that by looking at every step in the process identifying only those that add value and looking at the 3 major enemies of a lean operation.  

Waste can then be broken down into 8 major categories.  Like colors these are often interrelated. Look at your day and see if you can identify any of these:

  1. Defects
  2. Overproduction
  3. Waiting
  4. Non-Utilized Talent
  5. Transportation
  6. Inventory
  7. Motion
  8. Excess Processing

The acronym ‘DOWNTIME’ will help you remember.


Quiz others on your team.  Turn it into a game. This is where productivity improvements start.  

Workshop


Lean Principle - 8 Categories of Waste
Field labor is the often the biggest variable on a construction project - making it the biggest risk and opportunity....

Lean Principle - 8 Categories of Waste
Field labor is the often the biggest variable on a construction project - making it the biggest risk and opportunity....

Impacted Productivity - Highly variable Labor Scheduling (Level Your Schedule)
The biggest risk for a specialty contractor is the performance of on-site labor. One of the biggest impacts to labor productivity is having a schedule that requires large variations in labor.
Lean Principle - Value Add vs. Non Value Add
For specialty contractors the field workforce represents most of their competitive advantage as well as their biggest source of variability. Making improvements to field productivity requires deeply understanding what truly adds value to the customer.
Impacted Productivity - Dilution of Management
Dilution of management will compound an already impacted construction project. It is important for teams to realize the full costs of impacts as they start to occur.