noun
diligence award; good attendance prize
An award given for consistent effort, punctuality, or perfect attendance, often in schools or workplaces.
彼は一年間無欠席で精勤賞をもらった。
He received the diligence award for perfect attendance over the year.
Compound of 精勤 (diligence, assiduity) and 賞 (prize, award).