A strangely click-baity title for an academic paper. What's next? "Four crazy macroeconomic predictions. You won't believe what's number four!"

Seems like a fairly conventional economics paper title.

Perhaps you're misparsing the second sentence? "Shocks" is not used as a verb here -- it's a noun, part of the phrase "labor market shocks," which refers to sudden events that disrupt the labor market.