Despite causing anxiety to one or both parties involved, job interviews can be productive and advantageous. They serve as introductions, job descriptions, and interviewee showcases.
The workplace consists of a relationship network. One of the most important relationships is employer to employee. It is therefore essential that potential employers and employees meet and know each other, so they can determine the probability of their working well together. The interview provides an opportunity for such a meeting. 
Most potential employees require knowledge of work conditions, salary, and benefits before committing to a company or other work organization. Again, the interview provides the chance. At this stage of the interview, the interviewee can assess the benefits of working for the interviewer, and compare them to what is expected of him or her in work terms.
Finally, job seeking is a matter of marketing one's self. During an interview, the interviewee may advertise him or herself by demonstrating abilities, explaining educational background and experience, and displaying confidence in a potentially intimidating setting.
Utilized properly, job interviews allow both interviewers and interviewees to make better-informed career decisions. They are essential for intelligent work place management.