How much time do you have?
Pretty much all companies above a certain size become psychopathic almost by definition: they're shaped by the ultra-capitalist environment they have to operate in. Almost mechanically, they try to lower their operating costs, and when human lives are impacted by the cost-cutting, it doesn't factor in because there's no "humans matter more" clause in capitalism.
It's less severe in Europe, where social democracies (still) impose limits on the immoral streaks of businesses, but the relentless pursuit of efficiency at all costs - including human costs - is relentless, and the regulators are easily corrupted. So it's a losing battle.