We investigate the implications of egalitarian equivalence (Pazner and Schmeidler in Q J Econ 92:671–687, <CitationRef CitationID="CR31">1978</CitationRef>) together with queue efficiency and strategyproofness in the context of queueing problems. We completely characterize the class of mechanisms satisfying the three requirements. Though...</citationref>

Subgroup additivity requires that a rule assigns the same expected ‘relative’ utility to each agent whether an agent’s expected relative utility is calculated from the problem involving all agents or from its sub-problems with a smaller number of agents. In this paper, we investigate its...