Contributive Justice and Democracy

Contributive Justice is an uncommon term for a not uncommon practice that has rarely received systematic attention.  It connotes 'doing one's share', exemplified by dues-paying and mandatory military service, but alluded to in the context of a general social doctrine by probably only Marx' ' From each according to one's ability' formulation.  The concept is certainly germane to that of a Participatory Democracy.  So, that even mandatory voting is regarded as an imposition is a symptom of a deficiency in a presumed 'Democracy'.