self-serving decision; rigging things in one's own favor
Refers to a situation where someone in charge makes rules, plans, or decisions that unfairly benefit themselves. Often used in business, politics, or organizational contexts.
That budget allocation is completely self-serving.
It's a problem to decide executive compensation in a self-approved manner.
From お (honorific prefix) + 手盛り (serving oneself, from 手 'hand' and 盛り 'serving'), originally referring to serving oneself food, then extended to making self-serving decisions.