Economists at the Fed's St. Louis district project total employment reductions of 47 million, which would translate to a 32.1% unemployment rate, according to a recent analysis of how bad things could get.

The projections are even worse than St. Louis Fed President James Bullard's much-publicized estimate of 30%. They reflect the high nature of at-risk jobs that ultimately could be lost to a government-induced economic freeze aimed at halting the coronavirus spread. 

"These are very large numbers by historical standards, but this is a rather unique shock that is unlike any other experienced by the U.S. economy in the last 100 years," St. Louis Fed economist Miguel Faria-e-Castro wrote in a research paper posted last week.

There are a couple of important caveats to what Faria-e-Castro calls "back-of-the-envelope" calculations: They don't account for workers who may drop out of the labor force, thus bringing down the headline unemployment rate, and they do not estimate the impact of recently passed government stimulus, which will extend unemployment benefits and subsidize companies for not cutting staff.

However, the jobless picture already looks bleak.

A record 3.3 million Americans filed initial jobless claims for the week ended March 21. Economists surveyed by Dow Jones expect another 2.65 million to join them this week. Friday's nonfarm payrolls count for March is expected to show a decline of just 56,000, but that's largely due to a statistical distortion because of the sampling period for the count happening before the government implemented social distancing practices.