“…Workplace mediations frequently involve hierarchical conflicts, that is, subordinates in conflict with their supervisor, manager, or employer (Uitslag, Kalter, and de Gruil ). Previous studies of this type of mediation have shown that the relative hierarchical positions that parties occupy affect their perceptions of mediation effectiveness in the short term (Bollen, Euwema, and Müller ; Bollen, Ittner, and Euwema ; Bollen and Euwema ; Bollen, Verbeke, and Euwema ). Therefore, our second question is to what extent supervisors and subordinates perceive mediation effectiveness differently over the long term.…”