Ghost Dad (1990) on Netflix

Elliot Hopper is a widower with three children, he is currently working on a deal. It seems like his wife illness was very costly and this deal could put them out of the red. However he gets into a cab that is driven by a maniac, and Elliot crashes and the next thing he knows he is floating around and finds himself in the lab of a scientist who studies paranormal. Elliot asks the scientist to send him back so that he could finish the deal and make sure that his children are taken care of.