One opportunity cost for this is that instead of getting a job that pays I will be doing volunteer work. So I will not be able to make any money for my work. However I will be getting experience that I can put on a resume or a college application. If I were to decided to get a job rather than volunteer than I could spend a lot of time searching and getting turned down due to lack of experience.
But since I am not getting any money I will not be able to do many things that I would like to do, or I'd have to ask for money which doesn't always pay out.
One thing that I'd like to know more of is how do companies determine what the best decision for their business is without losing to much from the opportunity cost of it?