Analyze the main sources of employee selection.

The source is external selection and appointment, internal promotion and adjustment.

1. external recruitment: recruiting the required employees from the external human resources market, including attracting external talents through advertising recruitment, campus recruitment, professional job fairs, online recruitment platforms, etc. , usually used to fill new positions and special positions, or when internal promotion and transfer can't meet the demand.

2. Internal promotion adjustment: select and promote employees within the organization, and meet job vacancies through internal recruitment and post adjustment. Internal promotion adjustment is suitable for talents who have been studied and trained, which can improve the morale and loyalty of employees and save recruitment costs.