Suppose you felt that you were treated unfairly by a state building inspector while attempting to get a permit to remodel your house. If your representative in the state Assembly were to investigate this complaint on your behalf, what would this be an example of

Constituency service

Explanation:

Constituency service could be defined as when the representative in the state assembly looks out for those in his or her constituency in fighting their plight, providing services and seeing them through every challenge that has to do with their constituency.

As regards housing issues, the representative can guide through by enduring those caught up with housing challenges.

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.