Step 1: Understanding internal recruitment sources.
Internal sources of recruitment refer to hiring candidates from within the organization. This can involve promotions, transfers, or extensions of service to fill positions.
Step 2: Why these are internal sources.
- Promotion: Promoting existing employees to higher positions is a common internal recruitment method.
- Extension of service: Extending the service of existing employees, especially in critical roles, is another way to fill vacancies internally.
- Transfer: Transferring employees from one department to another is another form of internal recruitment.
Step 3: Conclusion.
All of the listed options — promotion, extension of service, and transfer — are valid internal sources of recruitment.