noun
additional gain; extra profit; supplementary income
Refers to an extra benefit or profit beyond what is expected or standard. Often used in economic or business contexts, but can apply to any unexpected additional gain.
投資の余禄で旅行に行けた。
I was able to go on a trip thanks to the extra profit from my investments.
この仕事は給料以外にも知識が得られる余禄がある。
This job has the additional gain of acquiring knowledge beyond the salary.
Compound of 余 (extra, surplus) and 禄 (stipend, reward). The exact historical derivation is uncertain, but the kanji combination suggests an additional stipend or reward beyond the regular one.