A "negative headcount" is a worker that makes so many errors that they create more work than they actually do.
Our new network engineer is a negative headcount - he doesn't know how to do much and what he does is usually wrong. I've been fixing his mistakes for the last two days.
by S1KRR November 5, 2016
Another aspect of negative headcount is when an employee is so toxic that other employees leave in order to get away from them.
Adam was so old school he was constantly making misogynistic and racist statements. That's the primary reason Eve gave for leaving. So Adam is a -1 negative headcount.
by S1KRR March 16, 2017