Obviously, if the dimensions are written too specifically, then there will be a lot of required updating. On the other hand, if they are written too generally, they will not contain enough information to serve their purposes. There is no science to help you through this problem. In my experience, shooting for three to seven dimensions usually balances these errors and, by the way, exercising your judgment can take a little of the tedium out of writing job descriptions. This repetition is of two types superficial and truly identical.
Superficial repetition is perfectly acceptable as long as the example tasks are different.
For example a sales person job and a repair person job might both have a dimension called Record Keeping . However, under the sales job it says For Example, keeping a contact frequency log and a current list of equipment bought by the client . Under the repair person job it says For Example, keeping a maintenance log on all equipment and annotating client satisfaction with the repair . While different, they are both examples of record keeping. Such dimension repeating eases the need to think of unique names for every dimension in every job within the organization.