Internal Sources: Recruitment from within the enterprise. There are two important sources of internal recruitment, namely, transfers and promotions

External Sources: An enterprise has to tap external sources for various positions because all the vacancies cannot be filled through internal recruitment. The commonly used external sources of recruitment are Direct Recruitment, Casual Callers, Advertisements, Employment Exchange, Placement Agencies and Management Consultants, Campus Recruitment, Recommendations of Employees, Labour Contractors, Advertising on Television and Web Publishing.