There would be a need for jobs, for sure. But there would be a lot of redundancy if your goal was to give everyone a job in the new system.

Let's say there are 10 insurance companies and we suddenly had to get down to one organization. So that's 10 CEOs down to 1 - what jobs do the other 9 get? The further down the chain of command the more redundancy you get. You could probably run the new administration with the headcount from two of those 10 companies, maybe even less since one system would allow for streamlined optimizations of policy and admin work.