• Put everything in writing: Every process, task, or policy related to your job should be written down and stored in a drive where others can access it (ideally with a date or version number).
• Support and train your colleagues: If no one else can do your job, flag it as a concern with your supervisor.
• Delegate: Avoid the trap of thinking you need to sign off on every last task, especially when a colleague or direct report clearly has the skills needed for the job.

Being replaceable—a concept various company executives and business management books have promoted over the years—isn’t as precarious as it sounds; it just means that someone else at your workplace can do your job. That doesn’t mean the work isn’t important, or that you aren’t the best person for...