Someone please tell me how monetary policy can directly affect unemployment. Or even "maximize sustainable employment" in today's world. Please, also tell me what other central banks have this mandate?
It can't *directly* affect unemployment -- it falls under the oft-used aphorism of "pushing on a rope." That doesn't mean that Congress (in all it's 'wisdom') doesn't want the Federal Reserve to *try*. But 50 years ago, in a fit of Wanting To Do Something, it ended up in the Fed's enacting language -- it's "mandate". So it has to say it's tried.
So, fast-forward to 2008, and all of the moanings that went on for the previous 12-15 months are coming to fruition, and the economy is tanking. In order to *encourage* output, hiring, NOT-shutting-down, risk-taking, confidence-in-economic-stability-sufficient-to-merit-investment-debt, the Fed started cutting rates, and eventually, there was the whole T.A.R.P. business, "short-term facilities", the building of the Fed balance sheet, etc etc. What they were trying to do was to *at*least* take out any impediments to output and employment.
"Pushing on a rope" does not mean it's not going to work, it just means it's not very effective.
Here's the underlying idea:
https://en.wikipedia.org/wiki/Quantity_theory_of_money
The Fed's choice variables are basically limited to M, in
M*V = P*Q
so,
M = (P*Q)/V
If you assume V,velocity and Q,quantity are short-term fixed, then increasing the amount of M,money in the economy causes inflation, and reducing it causes deflation. With a collapse of output Q, the Fed had to get in front of declining P,prices to maintain monetary stability -- a dance of reducing interest rates while buying up every dollar of *quality* debt available, to shrink the M,money supply without shrinking Q. And dance nimbly they did!
But do they have the ability to *increase* Q?? Their choice variable(s) are pretty much limited to M,money. They can make it *attractive* as possible to have Q grow, they can remove impediments, but they can't *make*it* happen. So,
"Pushing on a rope."
(Wow -- I just googled that phrase with 'Federal Reserve' attached: a lot of history there...!)
Last edited:

