"Internal sources of recruitment are better than external sources of recruitment." Explain the following three reasons in support of this statement.
(i) Sense of security.
(ii) Labour turnover and costs are reduced.
(iii) No need of induction and training.
Fayol points out the danger of increased turnover and recruitment costs in one of his principles. Identify the principle.
Explain briefly 'casual callers' and 'labour contractors' as external sources of recruitment.