Failure of effective human capital due diligence – among the top 5 if not the #1 reason for deal failure in the 1-3 year period post-transaction close. Of course, Human Capital Due Diligence has numerous steps and components, any one or combination can be a cause, so likely more than one of the top 5 and absolutely more than 2 of the top 10 issues are directly attributable to Human Capital Due Diligence.
