Explain briefly 'casual callers' and 'labour contractors' as external sources of recruitment.

Explanation

Casual callers:
In case of reputed organisations, many qualified people apply for employment on their own initiative. Such applications are known as unsolicited applications or casual callers. They serve as a good source of manpower. A proper file may be kept of such applications and the candidates may be called whenever the need arises.

Labour contractors:labour contractors maintain close contacts with labourers and they provide the required number of unskilled workers at a short notice to the organisation.