It increases the workload dramatically. Quite frankly, it's not just exodus. It's also people coming on as terms, people brought in as students, people who have different pay rules for administration.
If you're genuinely concerned about this, I think it would be helpful for the employer to do an exit interview when pay compensation advisers are leaving their jobs. This would provide you with concrete, accurate data, which we cannot now supply. We don't have access to those members when they're leaving. The employer should be doing exit interviews with those workers and asking them why they're leaving. This way, you'll get the answer.