Absolutely – and in the case of corporations, I'd say there is still a lot to do to improve the law governing their behaviour. But since chances for that seem to be quite low currently, and because even a perfect legal system cannot always capture every eventuality, there should be certain behaviours that are generally frowned upon, just as there are for people.

One example I recently heard was from a woman who was fired after attending her husband's funeral. That probably happens less than a dozen times per year, and might just not warrant a law. It still shouldn't happen.

(The problem, of course, is that with people our sense of morality is largely guided by other peoples' reaction to our behaviour. Corporations will never have the same sense of shame, and the closest analogy – boycotts – rarely work)