It is now clear that the European Central Bank (ECB) views higher interest rates as the right response to rising oil prices. As a result, the ECB risks painting itself into a corner, for the logic behind last week's interest-rate hike implies that more increases will follow -- a series of policy mistakes that will cost the Eurozone economies heavily.
Despite statements to the contrary, no central bank, including the ECB, can simply focus on inflation and ignore what happens to economic activity. Suppose, for the sake of argument, that stabilizing prices came at the cost of a 30 percent unemployment rate. Surely nobody would want that.
The ECB's defenders would say that such an outcome is purely hypothetical -- and irrelevant -- for there is no conflict between stabilizing inflation and sustaining the appropriate level of economic activity.
Price stability, says this view, reduces uncertainty, thus enabling firms and individuals to take the right decisions, so it is good, not bad, for economic activity.
This argument is true -- most of the time. But when an economy faces a major adverse shock, such as a sharp increase in oil prices, then the twin goals of stabilizing inflation and maintaining economic activity conflict, and the central bank's job becomes more difficult.
Think about what stabilizing inflation means in such a context. Firms are likely to pass the increase in energy costs on to consumers by raising their prices. In response, workers are likely to demand higher nominal wages.
If the central bank is to avoid an inflation spiral, it must ensure that the "first round" effects of higher energy prices on inflation do not fuel such "second round" effects.
In an environment where productivity gains and wage growth are already weak, persuading workers to accept a cut in real wages may be tough.
The interest-rate increase decided last week will soon appear insufficient, and will have to be followed by further hikes and a large increase in unemployment.
In order to achieve its inflation goal, the ECB may have to contract activity until workers are, in effect, beaten into submission.
Is there a better way to respond to adverse shocks? The answer from monetary theory is an unambiguous "yes":
Give workers a chance to adjust to higher energy prices, allow for some pass-through of higher prices to wages over time (so that wages adjust more gradually) and make clear that inflation will return to its target range within, say, a year or two.
Such a policy will limit the rise in unemployment, at the cost of only temporarily higher inflation.
So, why is the ECB set on a tougher course? There are three plausible reasons.
First, there has been little wage pressure so far. So the ECB may not have to increase interest rates very much in order to contain inflation. If this scenario plays out, the impact on economic activity and employment will be minimal.
But there are good historical grounds for thinking that it won't. What we are seeing in Europe today is more likely to be delayed adjustment rather than passive acceptance of real wage cuts by workers and unions.
The ECB should not delude itself into thinking that a small increase in interest rates will be enough. If and when wage pressure comes, the ECB, to remain true to its word, may be forced to increase interest rates much more than it now expects.
The second argument is that if the ECB stands firm, workers will not demand higher nominal wages, for they will understand that this would only lead to higher interest rates and higher unemployment.
This argument is not irrelevant; monetary policy probably has some effect on wage bargaining. But one should not expect too much from a tough ECB stance. Think of the limited success of the ECB's advocacy of greater labor-market flexibility: There has been no dramatic increase in the pace of reforms.
The third argument is that higher inflation today would endanger the ECB's credibility in the future. This argument, too, is hardly irrelevant: Higher inflation today must not be permitted to change inflation expectations in the medium run.
Leaving interest rates on hold in the face of adverse price shocks thus requires a convincing explanation by the ECB of its underlying policy.
Here, the ECB's task is all the more difficult because, having focused so narrowly on inflation stabilization, markets would read adoption of a more flexible stance as a change in position. Moreover, because the ECB has actually exceeded its inflation target in recent years, its credibility is already in doubt.
True, adopting the appropriate policy would require the ECB to articulate its rationale with great care. Here it can take lessons from its British and US counterparts: credibility does not require dogmatism, but rather clarity of purpose.
What is at stake is too important to ignore. On its current policy path, unless oil prices fall, the ECB risks being forced to commit to substantially higher interest rates, and thus to a further increase in Eurozone unemployment.
Olivier Blanchard is professor of economics at MIT and Francesco Giavazzi is professor of economics at Bocconi University, Milan.
Copyright: Project Syndicate
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