Caveat: New Zealand
We have both PT and OT that hit our obs unit in the AM. The night team usually stashes elderly folks who seem unsafe/frail/alone in obs for daylight to reveal the True Nature of the problem. About 20% get admitted for a combination of delayed diagnosis of medical issues or inability to discharge despite supports.
During the rest of daylight hours, our OT covers the rest of the hospital, but also does concussion assessments to hook them up with outpatient rehab. Then, our PT does the same sort of mobilization supports during the day (after hip relocation, etc.), but can also actually see patients primarily for pure MSK stuff in fast track. They always chat with the attending in fast track before/after, but it's still nice when they have time and a simple patient shows up.