I do not do this because it is not Mandatory The Argument of Supererogation and its Indecency Problem

Most arguments of Applied Ethics (e. g. slippery slope argument, argument of double effect) are well analyzed. An exception is the argument 'I do not do this because it is not my duty'. It makes sense to call the argument the 'argument of supererogation' (ASE): Since J. Urmson's essay Saints and Heroes of 1958, those actions are called 'supererogations' which (despite of their moral value) are not supposed to be duties. The argument is widely used not only in Applied Ethics, but also in ordinary moral everyday life. Nevertheless, there is a need of investigation because it has an indecency-problem. The argument is convincing if an actor does not want to risk his life. It seems indecent, however, if an actor refuses a simple favor or a service of friendship with the 'argument of supererogation', although they both constitute no duties. This paper reconstructs the 'argument of supererogation' as a syllogism. It analyzes its formal structure by benefitting from current Anglo-American literature on supererogation. The overall aim of this paper is to solve the problem of indecency.