BCBA supervised fieldwork is the experience requirement behind the certification: 2,000 hours of Supervised Fieldwork, or 1,500 on the Concentrated track, completed under a qualified BCBA supervisor within five continuous years.
Monthly minimums and caps, supervision percentages, and the 60% unrestricted-work rule decide whether your hours count — and the 2027 rules change the math.
Here is how the requirement works, hour by hour, including what the rules say about who pays.
Two tracks: Supervised vs. Concentrated fieldwork
Every BCBA pathway funnels into the same fieldwork standard: 2,000 hours of Supervised Fieldwork, or — when the more intensive supervision requirements are met — 1,500 hours of Concentrated Supervised Fieldwork.
The concentrated track does not reduce the requirement so much as reprice it: you trade 500 fewer accrued hours for double the supervision, 10% of your hours instead of 5%, and six supervisor contacts per month instead of four.
Beyond supervision intensity (the percentage, the monthly contacts, and, from 2027, the observation minutes), the monthly floor, the five-year window, and the unrestricted-work rule are the same on both tracks.
The two tracks are not all-or-nothing.
The BACB lets you mix them: concentrated hours convert at a ratio of 1.33, and the combination must total at least 2,000.
A year on the concentrated track followed by a slower supervised stretch is a legitimate shape — the arithmetic just has to land on 2,000.
One pathway briefly escapes the standard altogether.
Through December 31, 2026, Pathway 4 — the postdoctoral route — requires only 500 hours of Supervised Fieldwork.
That exception ends when the pathway does: from January 1, 2027, only Pathways 1 and 2 remain, and both carry the full fieldwork requirement.
Where fieldwork sits among the degree, coursework, and exam requirements is laid out step by step in how to become a BCBA.
Concentrated is a trade, not a shortcut
The monthly rules that decide whether your hours count
Fieldwork is counted in supervisory periods of one calendar month, and each month has to clear four bars at once.
First, volume: a minimum of 20 fieldwork hours and, under the 2026 rules, a maximum of 130 — the cap rises to 160 on January 1, 2027.
Second, supervision: at least 5% of your hours on the Supervised track, or 10% on the Concentrated track, must be supervision within that month.
Third, contacts: four meetings with your supervisor per month (six on the concentrated track).
Fourth, observation: your supervisor must observe you with a client at least once during the month — under the 2027 rules that observation is specified as 60 minutes cumulative (90 on the concentrated track).
Supervision itself splits two ways.
At least 50% of the supervision you receive each period must be individual — one-on-one with your supervisor.
The rest may be group supervision: an interactive meeting of 2 to 10 trainees, capped at half of your supervised hours for that period.
If multiple supervisors share your fieldwork, the group meetings must come from the same supervisor who provides your individual supervision.
The volume rules hide a pace constraint.
At the 20-hour monthly minimum, 2,000 hours would take 100 months — but fieldwork must be completed within five continuous years, counted by calendar month rather than date-to-date.
Sixty months is the whole window, so the practical floor on the 2,000-hour track is an average of more than 33 hours every month.
The concentrated track's 1,500 hours averages 25, but its 10% supervision rate is the offset.
Which rule set governs you depends on your dates
What counts: unrestricted vs. restricted activities
Not every hour in a behavior-analytic job is a fieldwork hour.
At least 60% of your total fieldwork hours must be accrued doing what the BACB calls unrestricted activities — the work most representative of what a BCBA actually does.
The handbook's examples: conducting behavior-analytic assessments such as functional analyses and stimulus preference assessments, writing and revising behavior-analytic programs, training staff and caregivers, graphing and analyzing data, and researching the literature relevant to a client's programming.
The 60% does not need to be met each month, only across your accumulated hours — on the 2,000-hour track, at least 1,200 unrestricted hours.
The remaining 40% ceiling belongs to restricted activities: delivering the therapeutic and instructional procedures themselves.
There is no minimum for restricted hours, and the boundary is finer than "client time" — the handbook's own example notes that data collection is a restricted activity when a trainee collects data solely as part of a client's treatment program.
The design intent is explicit: the restriction exists so trainees have enough time to acquire the skills beyond direct implementation that BCBA practice requires.
This is the rule that catches technicians moving up.
You may hold RBT certification while completing your fieldwork hours, but the handbook is direct that many of the tasks completed as part of RBT work and RBT ongoing supervision requirements may not count toward fieldwork.
The direct-care hours that fill a technician's week are, almost by definition, restricted activities.
(The separate supervision an RBT must receive while practicing is its own BACB requirement with its own standards — it is not the same thing as fieldwork supervision, and those hours follow different rules.)
Who can supervise your fieldwork
Hours accrued under the wrong supervisor do not count, so the supervisor check comes before the first logged hour.
A fieldwork supervisor must be an active BCBA with no current disciplinary sanctions who has been certified for at least one year and meets the ongoing supervision CEU requirement — or a BCBA certified for less than one year who receives monthly consultation from a qualified consulting supervisor.
Every supervisor, regardless of route, must also complete an 8-hour supervision training and upload the certificate to their BACB portal before signing a supervision contract; you can confirm a supervisor's training through the BACB Certificant Registry.
All of your hours must connect to direct client services, which means your supervisor needs a direct relationship with, or oversight of, the clients you work with.
The relationship rules are stricter than most trainees expect.
A supervisor may not be related to you, subordinate to you, employed by you, or in a multiple relationship with you during the fieldwork period — with one written-in exception that matters for the money question below: compensation paid to the supervisor by the trainee for supervision services does not count as employment.
Before any hours accrue, you and your supervisor must sign a written supervision contract.
The handbook specifies what it contains: each party's responsibilities, the activities and training objectives individualized to you, the objective circumstances under which the supervisor will not sign your verification forms, the consequences of not adhering to responsibilities, written permission from your on-site employer where applicable, and a commitment to retain the documentation for at least seven years.
Hours are verified monthly on a Monthly Fieldwork Verification Form signed by your supervisor, with a Final Fieldwork Verification Form submitted with your certification application — and the BACB can audit everything, so the contract, logs, and monthly forms are kept, not discarded.
What changes on January 1, 2027
The fieldwork totals survive the 2027 restructuring untouched — still 2,000 Supervised or 1,500 Concentrated hours, still the 20-hour monthly floor, still five continuous years.
What changes is the supervision intensity and the ceiling: the Concentrated track's supervision requirement drops from 10% to 7.5% of hours, the monthly cap rises from 130 to 160 hours, and the once-a-month client observation becomes a specified 60 minutes cumulative (90 on the concentrated track).
The 2027 rules also introduce new Monthly and Final Fieldwork Verification Forms, replacing the current documents.
The changes are dated, not optional: the new numbers govern fieldwork from January 1, 2027 onward.
If your fieldwork straddles the change, the BACB's guidance for meeting the requirements during the 2027 transition is the document to read before scheduling periods on either side of the date — and keep the monthly documentation current either way, since the BACB can audit all of it when you apply.
The certification this all feeds is a national credential, not a licence; what a BCBA is — and how state licensure stacks on top of it — is the hub's subject.
Who pays for BCBA fieldwork supervision?
The BACB's own fees are the fixed, published part — and the candidate pays them: $245 for the certification application, $125 for the examination appointment at Pearson VUE, $140 for a retake application, $215 to recertify every two years, and a $50 late fee.
What the BACB does not publish is any price for supervision, because its fieldwork rules contain no fee schedule at all.
The requirements govern hours, supervision percentages, supervisor qualifications, and documentation — the supervision contract the handbook requires must spell out responsibilities and consequences, but the BACB names no required payment terms in it.
What the rules do establish is that the money question is real and trainee-side payment is contemplated.
The relationship rule that bars a supervisor from being employed by the trainee expressly carves out "compensation paid to the supervisor by the trainee for supervision services" — the BACB drafted its ethics boundary on the assumption that some trainees pay their supervisors directly.
And the handbook's own advice on finding a supervisor traces the usual arrangement: start by asking whether someone qualified at your organization is willing to supervise, ask your university's faculty for guidance, and search the BACB Certificant Registry for supervisors who take trainees.
An employer-paid arrangement — supervision folded into a job you already hold — is the shape the handbook's first suggestion describes; a directly hired outside supervisor is the shape the compensation carve-out anticipates.
What no source establishes is what any of it costs: there is no named, dated national survey of BCBA fieldwork supervision fees or of how the cost is split between trainee, employer, and supervisor.
Per-hour supervision ranges circulate on supervisor-marketing sites with no survey behind them.
Anyone quoting you a standard rate for BCBA supervision is guessing.
The therapy licences have at least one named data point: in the ASWB's 2024 workforce study, 25.95% of US clinical social workers reported paying for their own clinical supervision — a different profession, but the same question, and it is covered in who pays for clinical supervision.
For behavior analysis, the honest answer is that the BACB contemplates both arrangements and no dataset yet measures either.
What the hours qualify you for, meanwhile, is not abstract: it is the credential employers screen for on the BCBA job board.
This article is general career information, not legal, clinical, or medical advice, and it is not guidance for anyone seeking treatment. Fieldwork requirements are set by the BACB and change on published dates; confirm the current rules with the BACB's handbook before relying on anything here.