Can vacancies plunge without a significant rise of unemployment?

The primary objective of central bankers is to maintain low and stable inflation. While this task was never easy, the recent bout of large, adverse supply shocks—from the pandemic to the Russian invasion of Ukraine—combined with massive demand stimulus (both fiscal and monetary) made the task of securing price stability far more difficult.

Our favored indicator of the inflation trend, the Dallas Fed’s trimmed mean PCE price index, rose at a 4.4% annual rate over the past six months, and seems to be accelerating. Furthermore, while activity has slowed, the U.S. labor market remains extraordinarily tight: there are nearly two vacancies for each person who is unemployed—well above the peaks of the early 1950s and the late 1960s.

Against this background, a large, recession-free disinflation seems highly unlikely to us (see our recent post). In theory, a plunge of vacancies could cool a very hot labor market without raising unemployment (see, for example, Waller). In practice, however, the behavior of the relationship between vacancies and unemployment since 1950—what is known as the Beveridge Curve—suggests that this is very unlikely (see Blanchard, Domash and Summers).

That is the subject of this post….

Inflation risks and inflation expectations

U.S. inflation has been low and steady for three decades. This welcome stability is not merely a consequence of good fortune. Shocks that in the past might led to higher trend inflation—like the energy price increases—continue to buffet the economy much as they did in the 1970s and 1980s, when inflation rose to a peacetime record. Rather, it reflects the improved monetary policy of the Federal Reserve, which began acting as an inflation-targeting central bank in the mid-1980s, long before it announced a 2% target for inflation in 2012. As a consequence of the Fed’s sustained efforts, long-run inflation expectations have remained close to 2% for more than 20 years. One result is that temporary disturbances that drive inflation above or below target quickly fade.

This is the optimistic conclusion of the 2017 U.S. Monetary Policy Forum (USMPF) report. Since the adoption of the de facto inflation-targeting regime, one-off shocks have little impact on the inflation trend. Moreover, as many have observed, the relationship between unemployment and inflation—the Phillips curve (see our primer)—is now notably weaker. However, the authors of that earlier report warn that the Phillips curve “flattening” could be a direct consequence of the Fed’s success. Furthermore, since the sample period from 1984 to 2016 excludes any sustained period of a very tight economywide labor market, it would not be possible to detect an outsized impact, if any, of persistently low unemployment on inflation.

Enter the 2019 USMPF report, which focuses on the possibility that inflation may indeed respond differently when the unemployment rate is very low and projected to remain low for several years (see, for example the FOMC’s latest Summary of Economic Projections). The logic is straightforward: if labor is very scarce for an extended period, employers will bid up wages and (unless they are prepared to accept declining profits) pass on those cost increases in the form of higher prices….

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