OT Productivity Calculator
Productivity is billable hours ÷ (hours worked − leave hours). A therapist working 160 hours with 8 hours of leave and 6,300 billable minutes is at 69.1% — about 30 minutes of billable time per day short of a 75% target.
Free · runs in your browser · nothing you type leaves the page.
Work out your productivity percentage
Pre-filled with a typical full-time month. Change any figure to match yours.
| Value | |
|---|---|
| Available hours (worked − leave) | 152.0 |
| Billable hours | 105.0 |
| Billable minutes needed to hit 75% | 6,840 |
| Shortfall | 540 min |
| …which is, per working day | 27 min |
How productivity is calculated
Productivity is billable time as a share of the time you were actually available to work:
productivity = billable hours ÷ (hours worked − leave hours)
Two details decide whether the number is fair. Leave has to come out of the denominator — counting a week of annual leave as available time guarantees a month looks bad for a reason that has nothing to do with how you worked. And a billable hour is not always 60 minutes: where a setting bills in 55- or 50-minute units, the conversion has to use that, or every month reads low by the same silent margin.
Everything else — admin, documentation, meetings, supervision — stays inside the denominator. That is the point of the measure: it is the share of your available time spent in billable contact, and non-billable work is what makes the rest of it.
The number that actually helps: the gap in minutes
Knowing you are at 68% against a 75% target tells you that you are behind. It does not tell you what to do, because the gap is expressed in a unit you cannot act on.
Converted back to minutes, it becomes a decision. A 7-point gap on 152 available hours is about 640 billable minutes for the month — roughly 32 minutes per working day, or one additional treatment session every day and a half. At that point you can tell whether the target is a scheduling problem, a referral-flow problem, or simply unreachable in your setting.
Why a low month is often a measurement problem
Before treating a dip as a performance issue, check the three things that most often cause one: leave that was not subtracted, cancellations and no-shows recorded as billable time (they are not), and evaluation or documentation-heavy weeks where the work was real but the billable minutes were not.
Productivity is a useful operational measure and a poor measure of a clinician. It cannot see complexity, cancellations, travel, or supervising a student — all of which change how much billable contact is possible without changing how hard anyone worked. Track it monthly, look at the trend rather than any single month, and keep a note against the unusual ones.
Common questions
How do you calculate productivity for an OT?
Divide billable hours by available hours, where available hours are total hours worked minus leave. Convert billable minutes to hours using the minutes-per-billable-hour your setting uses, which is not always 60.
Should leave be included in the calculation?
Leave is subtracted from hours worked so it never appears in the denominator. Including it makes any month with annual or sick leave look artificially low.
What is a typical productivity target?
Targets vary widely by setting — outpatient, inpatient, skilled nursing and school settings all differ, and so do employers within them. The useful comparison is your own trend against your own target, not another setting's number.
Do cancellations count as billable time?
No. Only attended, billable minutes count. Recording no-shows as billable inflates the number and hides the scheduling problem that caused them.
How many extra minutes do I need to hit my target?
Multiply your target percentage by your available hours to get the billable hours required, subtract what you have, and convert back to minutes. The calculator above does this and also divides it across a 20-day working month.