同样，晋升也是企业用来招聘内部员工的另一个内部来源。它是在现有薪金内升级工作人员的过程。这是一种把员工调到更高的职位的方法，而不是把员工调到另一个有高工资、高地位、高设施和高责任的地方。这一来源对员工激励绩效有很大的心理影响(DeVaro and Morita, 2013)。
与内部方法不同，还有另一种方法称为外部招聘方法。这是一个从外部组织招聘员工的过程。外部来源通常包括广告、教育机构、职业介绍所和劳务承包商(Rudman, 2010)。广告是通过电子和不同的平面媒体发布招聘信息的一种外部手段。使用这个资源的好处是它覆盖了更大的市场区域，有助于吸引来自不同市场的候选人。另一个来源是大学、学院和学校。这种方法被称为校园招聘。这一过程提供了招募新人才的机会。一个特殊的校园招聘单元可以帮助新求职者通过这个过程找到工作。劳务合同工是另一种从外部招聘候选人的方式，候选人通过合同工招聘。职业介绍所也可以帮助从外部招聘候选人。由政府、私人和公共部门运营的组织可以是职业中介机构，根据工作需求帮助招聘非技术、熟练和半熟练的求职者(Nankervis, Compton and Morrissey, 2011)。
Similarly, promotion is another internal source that is used by the organisations to recruit internal employees. It is the process of upgrading a staff within the existing payroll. It is the way of shifting a staff to a higher position instead of transferring to a different place with high pay, status, facilities and responsibilities. This source has a great psychological impact on the employees to motivate their performance (DeVaro and Morita, 2013).
In general, two different methods are utilised to recruit skilled, qualified and talented employees internally. One method is through employee referrals which the process of recruiting the candidate through reference of employees presents in the organisation. Usually, this process is done by the supervisors. They find skilled candidates based on their performance and refer for the organisation. Another method is job posting, which provides the employees an open invitation to apply for the vacant position. Announcements in such conditions are made through lists, bulletin boards or internal employee portal. In this way, the internal recruitment method helps to save time and cost, as the process requires less training.
Unlike internal method, there is another method called external recruitment method. It is the process of hiring the employees from outside organisation. The external sources often include advertisements, educational institutes, employment agencies and labour contractors (Rudman, 2010). Advertisement is an external method that involves announcement of job vacancy through electronic and different print media. The advantage of using this source is that it covers larger market area and helps to attract candidates from different markets. Another source is universities, colleges and schools. This method is termed as campus recruitment. This process gives the opportunity of recruiting fresh talented candidates. A special campus recruitment cell helps the fresh candidates to get job through this process. Labour contractors are another way of recruiting candidates externally, where the candidates are recruited through contractors. Employment agencies can also help to recruit candidates externally. The organisations run by government, private and public sectors can be employment agencies that help to recruit unskilled, skilled and semi-skilled candidates based on the job requirements (Nankervis, Compton and Morrissey, 2011).