Selfless Service is a commonly used term to denote a service which is performed without any expectation of result or award for the person performing it. It is also sometimes used to denote a service performed with no apparent 'earthly' result, but which may accrue results in a
spiritual or
heavenly realm after death, although in the pure sense of the term that would not qualify as a strictly 'selfless' action.
See more at Wikipedia.org...