Inequity of support or recognition:

When support or recognition for volunteers or workers depends upon the attitude, ability or knowledge of the particular manager, the support received by different individuals and teams may vary. Inequity can be the cause of both guilt and resentment.

A real stress can be inequity within or between staff teams. This can lead to feelings of resentment towards those who have support or recognition or conversely, guilt or concern for those who don't. Kate Minto – Mandala Foundation

There was a drive for household goods but only for three of five staff because our organisation ran out of steam before collecting for the last two. This offered solace to three but crushed another two. Anne Leadbeater - Kinglake Ranges