In my work there are clear inequalities between colleagues for choosing the holidays period and for choosing morning or evening shift. The more senior a worker is the more privileges he has. Let’s suppose that one of the senior workers decides voluntarily to give some of his privileges to another worker even though other senior workers probably will not do the same. Should the junior worker feel and express gratitude for this action? Or, as the decision could be considered as a matter of justice and more equality, it is what everybody should do, and so gratitude is not necessary, and the senior worker should not be expecting gratitude.