Overlapping expertise is another form of replacing someone. At a basic level, employees need to go on vacation, parental leave and all sorts of other personal leave. If you were irreplaceable, you couldn't go on leave.
Companies who develop these systems successfully are able to allow employees to go on leave for 4-6 months and have them easily come back. This is a good thing.
Companies who develop these systems successfully are able to allow employees to go on leave for 4-6 months and have them easily come back. This is a good thing.