Final answer:
Regular job analysis and revision is a common approach to keeping job descriptions updated.
Step-by-step explanation:
A common approach to keeping job descriptions updated is through regular job analysis and revision. This involves using methods such as observation, surveys, and interviews to obtain information about the skills and requirements of a specific position. It can involve observing someone proficient in the role or interviewing those currently holding the position, their peers, and supervisors. By regularly analyzing and revising job descriptions, companies can ensure that they accurately reflect the changing needs and expectations of their roles.