Job descriptions are often an HR item that is important up front, but gets put on the back burner until it is thought of again or needed. There is so much that goes into HR, that this is something that is often overlooked since it does not need to be updated until there is a change, which depending on the business and position could be constantly to many many years before something will need to be updated. Some positions, like store manager, or a specific assistant manager, may need minimal updating every few years, but temp positions for specific projects may need to be updates quite frequently as these projects come up or change over time. In the SHRM article, “Job Worth Doing: Update Descriptions,” they recommend to update once a year around the annual review time to make sure they are current with what employees are being reviewed on, however, if there is a significant change, take care of it as soon as possible after the change and not wait until the next year. Also, make sure to keep an open communication with all levels of employees in the company to make sure that their duties and the job descriptions match. By doing this, it will help to reduce any employee relations problems or any legal problems that may arise since everything will be always up to date in the system and with the company records. Throughout my several jobs in different types of retail and customer service, I have seen that all the companies that I have worked for do a good job of keeping their job descriptions and postings up to date, however, companies have increasingly added a line that says “Other duties as assigned” to postings lately so that they have some flexibility in what they are able to assign to employees while still remaining within their normal job duties.
https://www.shrm.org/topics-tools/news/hr-magazine/job-worth-update-descriptions