Winstonm, on 2011-September-01, 10:36, said:
I'd like to thank everyone for their input into this side discussion as I have found it quite entertaining and helpful to hear some other viewpoints. I would like to return for a minute to Phil's discussion of inflation and its affect on wage-productivity ratios.
Here is a simplified example of what I understood him to mean. If a manufacturer has costs of commodity $1 and labor $1 and sells his product for $3 then productivity-wage ratio is 3:1 and profit is $1. If the commodity price rises to $3, though, then the product price must rise to $5 to keep profits equal and this then means productivity ratio changes to 5:1.
What this example fails to account for is an explanation of why prices didn't rise to reflect both the increased costs of the commodity and increased pay for labor. The price could have risen to $6 and included a $1 increase to labor, keeping the productivity ratio 3:1 while retaining profits of $1.
I am pretty sure you are meant to measure productivity as the "value added", so in your first example wage productivity is 3-1=$2, labour share, on the other hand, is the fraction of the selling cost paid to labour, in this case one third. So in your example, with commodity costs at $3, productivity is unchanged, at $2, but the labour share is now one fifth. (If you were wondering this shows the odd paradox that increased productivity lowers the value added, per item, but increases the value added, per worker, as I can, by definition, make more items per worker than previously.)
The reason that prices did not rise to reflect commodity prices, is that would expect you to sell the same number of items at the higher price, but that is not the way supply and demands work. If I increase the price of a car, I expect to sell fewer cars. Thus the true choice for a company when prices rise is to raise the selling price and lay off workers to reduce production, or squeeze wages to maintain the price. Or more likely, a bit of both.
EDIT: I feel like I should add, that increased productivity can drive the labour share either up or down, because it covers a cornocopiea of effects. E.g., it might mean that you can make more items in a given time, so you are reducing the amount paid to the worker per item, in order to drop the prices and increase market share, and this would increase production, so I would keep the same number of workers, but increase total commodities cost, so labour share would decline. OTOH, it could mean making more items with less stuff, then the commodity cost per item would fall, and then labour share would increase as its a bigger fraction of the selling price. However, as generally measured, the second one would not count as a productivity increase, as the value added per item has not changed. Which is a little messed up, imo
The physics is theoretical, but the fun is real. - Sheldon Cooper