job analysis facilitates human resource management

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I am having trouble answering the following 2 questions
Answer the following two essay questions in no more than 6 pages each. If you use other references, give credit in the prose of the answer.)

Explain how job analysis facilitates human resource management. What is its (job analysis) future? How do the resulting job description and job specification fit into this picture, particularly in the coming jobless world? How would you as an HR manager recruit in this environment?

Job analysis
Job Analysis is a process to establish and document the 'job relatedness' of employment procedures such as training, selection, compensation, and performance appraisal. (Jobanalysis)
Thus job analysis provides information about the actual functions that are carried out on job by employees. The job analysis helps the HR understand the nature of each job. This is essential for recruitment where it is important to have a complete job description. In addition, the job analysis helps the HR develop a fair and equitable package of compensation. Moreover, the job analysis helps the HR develop criteria for performance evaluation and implement them correctly.
Job analysis helps the HR to hire correctly, structure the organization in an effective manner and compensate the employees in an equitable manner. Most importantly, job analysis helps the HR to develop a comprehension of each job and the level of skills that are required to do the job effectively.
Job profile is the list of activities or tasks one would be expected to do once appointed for the job. Job and task analysis is performed as a preliminary to successive actions, including to define a job domain, write a job description, create performance appraisals, selection and promotion, training needs assessment, compensation, and organizational analysis/planning.
For job analysis the job is the criteria and not the person performing it, it's an analysis of the duties that are required to be performed and their importance for that particular job profile. During the analysis a job is analyzed on the basis of the duties and tasks one would have to perform, the environment, tools and equipments, relationships and requirements. Thus it helps in jobless environment too as it will make the expectations clear.
Key factors regarding recruiting

In a time when many companies are cutting costs across their operations, a growing number of HR departments are changing the ways they recruit. Their goal: to boost recruiting efficiency ...