Wiktionary
understaffing
n. The situation of having insufficient members of staff. vb. (present participle of understaff English)
Usage examples of "understaffing".
Some of it was doubtlessly the fault of the mass deregulation that had come into vogue with the Carter administration, overpopulating the skies and understaffing the smaller fields, when the commuter carriers suddenly discovered there was no FAA strong enough to keep them out of the bigger ones (like the Portland Jetport) anymore.
Martial law had been declared in several metropolitan areas, but the understaffing of the police, fire, and National Guard units that had experienced even larger percentages of disappearances than the population at large had made it almost impossible to enforce.