noun
perk; side benefit; perquisite
Refers to a benefit or advantage that comes with a particular role, position, or job, often unofficial or incidental.
この仕事の役得は、最新の技術に触れられることだ。
The perk of this job is being able to get hands-on with the latest technology.
役得で、イベントの裏側を見学できた。
As a side benefit of my role, I got to see behind the scenes of the event.
Compound of 役 (role, duty) and 得 (gain, benefit). The exact historical derivation is uncertain, but the meaning is transparent from its components.