In these difficult times, we’ve made a number of our coronavirus articles free for all readers. To get all of HBR’s content delivered to your inbox, sign up for the Daily Alert newsletter.

Government responses to the Covid-19 pandemic have closed down a significant portion of the global economy, creating severe liquidity problems for many companies at a time when the corporate sector is historically highly leveraged across the board.  So while the 2001 and 2008 economic downturns put only a relatively limited number of companies under serious cash-flow pressure — those that were both leveraged and whose earnings were sensitive to the economic cycle — the current crisis has left swathes of companies scrambling for cash.