I am sure that everyone has looked at a job description and found themselves frustrated wondering why this is all important. You just want a job right, you don’t really care but the importance of this is for many reasons.
It begins at you peering into the job benefiting you; it shows company culture, it helps you decide if it is something you yourself are willing to do, it shows career development, and finally it sets expectations so you don’t come into a new job lost on what to do.
This from a legal stance is very important too for all ends. It supports legal action in the case that an employee’s workers rights are violated. It is dispute resolution that can lead to legal action. This is another regulation for these organizations and organizations without regulation I would not even call a regulation!
Now reasonably there is one concern, how does this help my employer who may inevitably take advantage of me? Well it sets expectations for you and what you will have to do for your job. Further for the organization it helps internal equity which is indicative of helping you ensure employees are treated fairly and that just dips back into company culture and performance management.
At the end of the day accurate job descriptions should be as close to accurate and relevant as possible to both aid the employees, employers, and organizations. Truly, the only other option is no job descriptions or inaccurate ones leading to workplace dissatisfaction, discrimination, and workplace disorder.