A further new problem is that the jobs being created during economic recoveries are generally worse than those destroyed by recessions. In a 2012 study, economists Nir Jaimovich and Henry E. Siu analyzed data from recent US recessions and found that the jobs mostly likely to permanently disappear are the good middle-class jobs, while the jobs that tend to get created during recoveries are largely concentrated in low-wage sectors like retail, hospitality, and food preparation and, to a lesser extent, in high-skill professions that require extensive training.
