The supervision-hour ratio, explained
What the supervision-hour ratio actually means, why it varies 4x between states like Ohio and Washington, and how to work out your own required cadence.
The ratio is not one number
Ask three supervisees in three different states how much supervision they need, and you'll get three different answers, because the answer isn't "one hour a week" or "one hour a month." It's a ratio: a fixed amount of supervision required per fixed amount of practice. The practice side of that ratio (how many hours you're actually seeing clients or otherwise working) is what changes the required frequency, not a flat calendar schedule.
That distinction matters because two supervisees working the same job in two different states can be in full compliance on wildly different supervision schedules. Neither is wrong. They're just governed by different boards.
Three real ratios, side by side
Here's what three current state rules actually require, based on their published administrative code:
- North Carolina (LCMHCA): 1 hour of supervision per 40 practice hours (21 NCAC 53). Also requires at least 1 hour of individual supervision every 14 days, whichever comes first.
- Ohio (LPC to LPCC): 1 hour of supervision per 20 hours of work (OAC 4757-17-01(B)).
- Washington (LMHCA): 1 hour of supervision per 80 hours of clinical practice (WAC 246-809-020(2)(b)).
Line those up and the spread is stark. Ohio's ratio is twice as frequent as North Carolina's and four times as frequent as Washington's, for the same underlying idea: supervision tied to how much you're practicing, not to the calendar.
| State | Ratio | At 20 practice hrs/week |
|---|---|---|
| Ohio LPC | 1 hr per 20 practice hrs | About 1 supervision hour every week |
| North Carolina LCMHCA | 1 hr per 40 practice hrs | About 1 supervision hour every 2 weeks |
| Washington LMHCA | 1 hr per 80 practice hrs | About 1 supervision hour every 4 weeks |
What this looks like at a typical caseload
Say you're seeing clients 20 hours a week, a common full-time caseload for a pre-licensure counselor.
In Ohio, the 1:20 ratio means you need roughly 1 hour of supervision every single week to keep pace with your practice hours. Fall behind two weeks and you're already 2 hours short against the ratio, which is a meaningfully large gap relative to the weekly expectation.
In North Carolina, the 1:40 ratio means one week's worth of practice (20 hours) only requires half an hour of supervision credit, so the natural cadence lands around once every two weeks. That lines up with North Carolina's separate cadence rule, which independently requires at least 1 hour of individual supervision every 14 days regardless of how the ratio math works out. The two rules reinforce each other rather than conflict.
In Washington, the 1:80 ratio stretches that same 20 hours a week out to roughly once a month before you'd need a supervision hour to stay current on the ratio. That's a much longer runway, but it also means a missed month is a much bigger relative gap than a missed week would be under Ohio's rule. There's less room to notice the drift before it's substantial.
None of this is a suggestion. Each of these ratios comes from the board's own administrative code, and falling behind the ratio is the kind of gap that tends to surface at a license application or an audit rather than in the moment it happens. For the fuller picture of how these hours get counted, verified, and eventually presented for licensure, see Clinical supervision hours: the complete guide.
How to work out your own required cadence
The math behind the ratio is simple once you have the two numbers: your state's ratio, and your own weekly practice-hour count. Divide your weekly practice hours by the ratio's practice-hour side, and the result is roughly how many supervision hours you need that week to stay current.
Take a supervisee working 25 hours a week instead of 20. Under Ohio's 1:20 ratio, that's 25 divided by 20, or 1.25 supervision hours a week, a bit more than the flat-20-hours example above. Under North Carolina's 1:40 ratio, the same 25 hours works out to 0.625 supervision hours a week, which is why North Carolina's separate 14-day cadence rule exists: it converts an awkward fraction into a clean "at least once every two weeks" floor. Under Washington's 1:80 ratio, 25 hours a week comes out to about 0.31 supervision hours a week, reinforcing just how much more slack that ratio allows before a gap becomes visible.
The part that trips people up is that the ratio doesn't reset each week. It's cumulative against total logged practice hours, not a weekly quota you can miss one week and forget about. A supervisee who works 30 hours one week and 10 the next has logged 40 total practice hours across those two weeks, and North Carolina's rule cares about that 40-hour total, not about whether each individual week hit its own mini-ratio. That's exactly why a running dashboard view of the ratio matters more than doing the math by hand once and assuming it holds.
Individual versus group hours count differently against the ratio
The ratio tells you how much supervision you need. It says less about what kind. North Carolina's per-block rule requires each 40-practice-hour block to include at least 1 individual hour or 2 group hours, and separately requires 75% of your total supervision hours to be individual once you've logged 200 practice hours. Ohio has no fixed individual-to-group split at all. Washington requires that all 100 of its minimum supervision hours be "immediate" supervision (one supervisor, no more than 2 candidates); group sessions of 3 to 6 candidates don't count toward that minimum no matter how many you log. If you're trying to figure out which sessions actually satisfy your ratio, not just which sessions happened, the individual-versus-group distinction usually matters as much as the ratio itself. See Individual vs. group supervision requirements for how that split plays out across more states.
Does telehealth supervision count?
Only two of the three states researched here address remote supervision directly in the rule text.
Ohio's rule allows ongoing supervision to happen in person, by videoconference, or by phone, once an initial meeting (which itself may be by videoconference) has taken place. Washington's rule is explicit that both immediate supervision and group supervision may be conducted face-to-face or virtually, with no location restriction stated. North Carolina's rule, at least in the version AuditHalo has on file, doesn't address remote or telehealth supervision one way or the other. That's not the same as prohibiting it, but it also isn't the same as an explicit allowance. If you're supervising or being supervised remotely under North Carolina's rule, that's a question worth confirming directly with the NC Board of Licensed Clinical Mental Health Counselors rather than assuming Ohio or Washington's allowance carries over.
How AuditHalo tracks the ratio for you
The ratio is simple to state and easy to lose track of in practice, especially across a multi-month supervision relationship where practice hours accrue every week and supervision sessions get scheduled around everyone's calendar. AuditHalo logs every practice hour and every supervision session against your state's current rule the moment they're entered, and runs the ratio continuously rather than waiting for a milestone check-in. If your logged practice hours are outpacing your logged supervision hours relative to your state's ratio, a flag appears on the dashboard well before that gap becomes something a board would ask about. The same tracking applies to the individual-versus-group split where a state requires one, so a supervisee who's been getting plenty of group time but too little individual time shows up as a flag too, not a surprise at 2,900 hours in.
Check your own state's exact ratio on the states page, including Ohio, North Carolina, and Washington, or start tracking your hours against it today.
Frequently asked questions
What does a 1:20 supervision ratio actually mean?
It means 1 hour of supervision is required for every 20 hours of practice you log. If you see clients or otherwise practice 20 hours in a given stretch, the rule expects a supervision hour to cover that block before (or as) you keep accruing more practice hours.
Why is Ohio's ratio so much stricter than Washington's?
Each state board sets its own ratio independently, and there's no federal standard tying them together. Ohio's OAC 4757-17-01 sets 1 hour per 20 hours of work. Washington's WAC 246-809-020(2)(b) sets 1 hour per 80. Both are legitimate, current rules; they just reflect different board judgments about how much oversight a supervisee needs per hour of practice.
Does telehealth supervision count the same as in-person supervision?
It depends on the state, and you should check the specific rule rather than assume. Ohio's rule (OAC 4757-17-01) allows ongoing supervision by videoconference or phone after an initial meeting. Washington's rule (WAC 246-809-210(5)-(6)) states explicitly that both immediate and group supervision can be face-to-face or virtual. North Carolina's rule does not address remote supervision one way or the other in the text AuditHalo has on file, so check with the NC Board directly before assuming a video session counts the same as an in-person one.
What happens if I fall behind on the ratio?
The practical risk is that you keep logging practice hours faster than you log supervision hours, and the gap between the two grows until it shows up at an audit or license application, when it's much harder to fix. Catching the drift early, while you can still schedule an extra session to close it, is far easier than explaining a multi-month gap after the fact.