Yes, because they require it for internal apps. But as "user enrollment" so they are very limited in what they can do. See the table at the bottom of this page[1].
For context this is relatively new and is different from the older way of doing things (device enrollment).
Does your employer provide a cell phone subsidy? That is how most places do it, they give you some amount of money every month and you sign something that they can enforce policy and seize your device as required.
