Productivity has
become a very confused and abused term. This paper starts by
discussing the confusing definition of Productivity. It then goes on
to discuss how the developing country views productivity, giving
examples whenever appropriate. The article then discusses what
lessons the United States can learn from the Developing Country
approach.
The Definition of
Productivity
What is the most
productive nation in the world? Often I get answers like Japan,
Taiwan, or Korea, but in fact, the most productive nation in the
world is the United States. Unfortunately, we in the United States
can't be too proud of our standing because a lot of the answer is
based on the way I asked the question. If I had asked, which country
is showing the most productivity growth, the answer would be
completely different. The answer changes from year to year. Other
countries, like Japan, ask the question differently. They ask,
which country has the highest total factor productivity or the
highest value added productivity, or which country is showing the
most growth in these areas.
Now that I have
totally confused the definition of productivity, let me try to
clear it up by going back to the definition. Productivity equals
Output divided by Input. Output, for most companies and countries,
is total quality sales (or trade). However the definition of input
gets extremely confused. For example, in the United States
definition of productivity, the input is almost always labor. For
example, how many eggs, or loaves of bread, can the average worker
purchase for one hour's work. Based on this definition, the United
States wins out hands down over the rest of the world. But if you
compare the number of loaves purchasable this year verses ten years
ago, you're not going to find much change. That's because we're
showing very little productivity growth.
Other common
definitions of productivity include total factor productivity, where
all resource inputs including materials, energy, machine time, etc.,
and not just labor are included as inputs in the calculation. Value
added productivity is where you are looking for value added content
increases, and so the input factors focus themselves only on those
resources that record value added increases, for example research
and technology.
The United States
has the highest total labor productivity of the world, but it is
losing ground. One of the reasons it is losing ground is because
labor is now less than ten percent of the value added content of
most of our manufactured products while the materials content
ranges around 50 to 70 percent. Even though the United States looks
strong in labor productivity, we have now come to the point in our
development where further focus on labor is causing
us to become
misdirected. Making the employee work faster and harder will not
significantly improve overall productivity (total factor
productivity). In fact, it may even worsen the situation. For
example, if we develop materials or machine inefficiencies, like
always having plenty of materials to work on, or plenty of equipment
to work with, then we are reducing our resource productivity in 50
to 80 percent of our resources, in order to improve productivity in
less then ten percent of our resources. In other words:
IMPROVING LABOR
PRODUCTIVITY WILL MOST LIKELY RESULT IN DECREASING TOTAL FACTOR
PRODUCTIVITY
In the past, when
labor content was large, the focus on labor productivity was
important. However, today, we want our employees to work smarter,
not harder. We want our employees to focus on the productivity of
all resources, not just on the labor resource. We want managers to
view materials that are sitting around in the plant and not being
worked on in the same frustrated and irritated light that they would
view employees that are sitting around and not working. Other
countries of the world have recognized this problem, and they are
trying to adjust accordingly. Let's take a look at some of the
things they have learned.
To Be Continued
For balance of this article, click on the below link:
Lean Manufacturing Articles and go to Series 01