Is there a word that describes a situation where a person becomes well enough off in their other needs that they turn to helping others?

I'm thinking specifically about how celebrities turn their focus on charities and communities once they get to a certain status. I'm looking for a name for that situation, NOT an adjective to describe the person.

Example: Leonardo DiCaprio has reached such a place in his career that he can focus on philanthropy without the need to constantly work. His hierarchy of needs has been satisfied to a point where he is now searching for fulfillment in helping others.

The italicized area is the word I'm looking for. I'm looking for the search for helping others when you no longer have to focus on helping yourself.

Any ideas?