#197
Canard DuJour
. . . when neoclassical economists say 'OK, sure, real firms don't work like that. But entire markets or industries behave as if prices and wages were set by Econ101 supply and demand, marginal revenue etc.' ..Because that, as Sraffa et al pointed out, undermines the model entirely. Because you cannot then assume independent supply and demand curves with a unique optimum equilibrium price. More like a different demand curve intersecting any point on the supply curve.
It means that, for example, it isn't axiomatic that any MW raise must reduce demand for labour. You could still say that a big enough raise would reduce demand, but (duh) there was never any argument about that.
It IS axiomatic that any cost increase, including labor cost, not accompanied by a quality increase (or any other change), must reduce demand for whatever costs more.
This means a SMALL cost (wage) increase must result in a lower demand.
If you deny this, there is a question you must answer:
Generally, in what other part of the economy do you deny that a supply-and-demand change (e.g. cost increase) results in the corresponding change predicted by classical economics? And at what magnitude of change (higher cost/wage level) do you recognize that the supply-and-demand principle does take hold and cause a drop in demand?
Specifically (as an example), if the price of oil goes up by 5% (or even only 1%), does that not cause a corresponding incremental decrease in the demand for oil (all other factors being equal, unchanged), and subsequent higher cost for products dependent on energy, e.g., higher cost of many products due to higher transportation costs?
It is agreed that a higher cost on a large scale, like a 50% increase, always causes a reduced demand.
But what about a 40% increase? What about a 30% increase? 20%? 10%? etc.?
If you insist dogmatically that the reduced demand occurs only if the increase is very high, like 50% or 40% etc., then you have to explain at what point the higher cost suddenly stops having this negative impact on demand.
If you can't give any explanation or can't identify what the cutoff point is -- 20%? 10%? -- then the only logical conclusion to draw is that there is NO cutoff point, and that this relation between cost change and demand change is the same, at any percentage of cost increase, no matter how small, and the only reason there appears to be no change when the cost increase is very low is that the amount of change in demand is too small to measure.
What theoretical argument or empirical evidence is there to indicate that there is this cutoff point at which cost increase has no impact? If you have neither logic or empirical data to support your cutoff theory, then it is only reasonable to assume that there is NO cutoff point. And thus, higher cost, including labor cost, must result in at least some incremental decrease in the demand.
It was assumed that higher oil/gas prices a few years back resulted in higher food prices. Was this proved by empirical data? What was the evidence? The higher prices could have been caused by other factors. Was there really a close correlation of the two events?
There are plenty of examples where it is assumed that a small change in one condition causes a small change elsewhere. A good example is crop damage.
CROP DAMAGE -- Again and again in the news it is reported that crop damage is expected to cause future price increases, because of reduced supply. But do those price increases always occur?
It's all based on supply-and-demand. By this principle the forecasters easily predict the price increases. Such as a frost in Florida causing an increase in the price of citrus products, orange juice, e.g. And yet plenty of consumers a few months later seem to notice no change in the price of these products.
Does that mean the forecasters were wrong? No. It means that the total damage was not widespread enough to produce enough change to be noticeable, or noticeable to all consumers. Or the change may have been localised to a limited geographical area. In fact, there could even be some price DEcreases in some places, despite an overall incremental price increase.
So if you insist that a small labor cost increase does not cause a small decrease in the demand for labor, you must explain at what point in the higher and higher degree of cost increase the supply-and-demand principle kicks in and does produce that decrease in demand, since everyone agrees that beyond some threshold level of higher wage there is this decrease in the demand for labor. What is the threshold? How do you know what it is?
As long as this remains unanswered, the only reasonable conclusion to draw is that there is no threshold level and that even a small labor cost increase results in an incremental decrease in demand for labor.