No security at all. Once a new CEO comes in they lay a huge number of employees off call it reorganizing. What they really mean, employees once you hit top pay for the position currently hold, instead of advancement opporunities, they lay off or fire you. Then they rehire new staff for less pay.
I have also seen, in order for CEO and top executives to make bouses they fire employees and justify they no longer needed those positions, instead they overload other employees, (employees do not get raises for doing more) and tell them they are making changes to cover the jobs that stilll need to have covered.
Basiccally, your **** out of luck if you do not go with the flow take the additional responsibilities. They make your job difficult and tell you, you can find another job.
The problem is jobs are hard to come by, so most employees will do the added jobs, and hope they do not get laid off or worse "fired".
I would never apply at that Hospital again. No job support or security. When you ask for help, they said "we will see what we can do:. They never get back to you, they lack on patient care removing imporatnt staff with exxperieence.