In general:
Long days (7AM - 7PM);
Too much down time (for my preference);
Employees tend to report issues that they find with you to supervisors rather than bringing the issue up directly with you;
On that same note, employees talk behind your back and report you to managers in order to further themselves;
As Behavioral Management Sitter:
Low wages (10/hr) despite level of responsibility (i.e. suicide prevention);
Responsibilities and what you're allowed to do is unclear and not fully explained;
Nurses, doctors and other staff members do not take your position too seriously yet are quick to put the blame on you when there is a incident with the patient(s) that you sit with;
If you want to make half-decent salary, 60/hr a week is required (in order to gain overtime pay);
Literally no room for advancement without further schooling;
You spend a lot of time sitting while the patient sleeps/watches television;
Nursing team mostly ignores you and instead engages with other staff members of "respectable positions", except for when your patient acts disruptive/hostile;
You are not given uniform/scrubs to wear, which makes the position feel less official in comparison to almost every other employee (including the "patient transport team", who wear yellow scrubs) - this depends on your feelings towards uniforms, though.
Managers are quick to scrutinize you for trivial mistakes, which gives the feeling that your job lacks security;
Managers get upset over you being literally one minute late to clocking in (even though you are getting up before the sun does) and will insist on having a meeting with you in order to "discuss issues" over it. Wish I was kidding on this one.