Internal vs External Recruitment

Internal Recruitment: 

Pro: Target current employees, former applicants (previous pool of candidates) and former employees. Can build loyalty, they know existing culture and work practices (no time wasted on orientation), much cheaper and faster, less risk of external appointment. 

Con: can lead to rivalry and tension, no new ideas brought in, may reinforce existing culture.

External Recruitment: 

Pro: Acquiring new candidates using advertising methods. The generates a wider applicant pool, brings in new ideas and perspectives, can obtain specific skills required quickly (not through training), adds to diversity of workplace. 

Con: loss of productivity in early stages (need orientation), higher risk of culture mismatch, expensive, and increased time and effort required.