number of working days; days worked
Used in employment, payroll, and attendance contexts to refer to the count of days an employee actually worked.
The number of working days this month is 20.
Salary is calculated based on the number of days worked.
出勤日数 focuses on days physically present at work, while 就業日数 emphasizes days actually worked, which may exclude paid leave.
労働日数 is a broader term for labor days, often used in legal or statistical contexts, whereas 就業日数 is more common in company-specific attendance records.
Compound of 就業 (employment, work) and 日数 (number of days).