Understanding Employee Number and Assignment Number in Oracle HCM

When managing employees in Oracle HCM, every individual in the system is identified using two key numbers:

  1. Person Number – A unique identifier assigned to each employee in the enterprise
  2. Assignment Number – A unique identifier assigned to each job role or assignment an employee holds.

Employee Person Number (Employee Number)

Think of the Person Number as a permanent ID that stays with an employee throughout their time in the system. Every person in the organization gets one, and it can be generated in two ways:

  • Automatic Generation: The system assigns the number automatically, ensuring consistency.
  • Manual Entry: HR teams can enter and update numbers as needed.

Even if an employee leaves and returns, their Person Number remains the same.

 

Assignment Number

Unlike the Person Number, the Assignment Number is tied to a specific job within the company. If an employee has multiple roles, they will have multiple Assignment Numbers.

By default, the first Assignment Number is the same as the Person Number. However, if an employee gets an additional assignment, a suffix is added to differentiate it. For example:

Employee Name Person Number Assignment Number(s)
Samantha Green 1012 E1012 (Primary), E1012-2 (Secondary)

This means Samantha Green first had one role (1012), and later took on an additional assignment (1012-2).

Why Does This Matter?

These numbers help organizations:
✔ Keep employee records organized
✔ Track multiple assignments for one person
✔ Simplify payroll and reporting

I hope this blog post was helpful for you. If you have any questions or feedback, please leave a comment below.