The Price of Survival(1980)

Jefferson City, Missouri: Joseph Randolph, a VIP in a fictional electronics company, has just gotten the sack. The company bigwigs insist it is simply because of downsizing, but Randolph is not buying it. Enraged, he gets a handgun and shoots five managers to death. Then he turns himself in and is eventually put in a psychiatric hospital by the police. His family suffers a series of tragedies that leave only his daughter to wonder about why her father was committed to an institution. She joins with a visiting reporter from Chicago and another interested man, and all three start digging deeper into the company's history.