Completing 1,500 hours of Concentrated Supervised Fieldwork for BCBA certification typically takes 12 to 24 months. At 30–32 hours per week, you can finish in a year; at 15–16 hours per week, plan on two years. Important context: 1,500 hours applies only to the BACB's concentrated fieldwork pathway, which requires 10% supervision. The other pathway — standard Supervised Fieldwork — requires 2,000 hours with 5% supervision.
The actual time you'll need depends on your weekly schedule, your supervisor's availability, the ratio of unrestricted to restricted activities your work allows, and — critically as of 2026 — which set of BACB requirements you'll be applying under.
This guide walks through both pathways, gives you a realistic week-by-week timeline, an hour-tracking template you can use immediately, and a clear breakdown of what counts versus what doesn't.
The two pathways at a glance
Before anything else, know which pathway you're on. Many trainees plan a timeline based on "1,500 hours" when their actual employer or program is structured around the 2,000-hour pathway.
Feature | Supervised Fieldwork (Standard) | Concentrated Supervised Fieldwork |
Total hours required (2022 rules) | 2,000 | 1,500 |
Supervision percentage (2022 rules) | 5% of hours accrued | 10% of hours accrued |
Monthly hour range | 20–130 hours | 20–130 hours |
Supervision contacts/month (2022) | 4 contacts | 6 contacts |
Best fit for | Trainees balancing full-time work or other commitments | Trainees who can dedicate concentrated time to fieldwork |
Typical completion timeline | 18–36 months | 12–24 months |
Both pathways count toward BCBA certification. You can also mix the two — you can switch pathways or combine hours across them, as long as your documentation reflects which type each hour falls under.
The 2027 changes — what you need to know if you're starting now
Critical context: The BACB's certification rules are changing on January 1, 2027. If you're starting fieldwork in mid-2026, you'll likely apply under the new rules. Here's what's shifting:
Concentrated supervision drops from 10% to 7.5% of accrued hours
Monthly maximum increases from 130 to 160 hours
Supervision moves from contact-count to duration-based tracking (e.g., "1 observation of at least 60 minutes per month")
No more fixed minimum supervision meeting frequency — instead, percentage and observation requirements drive the structure
At least 50% of supervised hours must be individual (not group supervision) per supervisory period
Pathways 3 and 4 (faculty teaching and postdoctoral experience) are eliminated
The BACB's official guidance is to track your hours under both the 2022 and 2027 standards if you're uncertain when you'll apply. The two systems aren't fully interchangeable — for example, four 15-minute observations meet the 2027 cumulative duration rule but fail the 2022 "one contact per month" rule.
Practical takeaway: If you start fieldwork in mid-2026 and finish in 12 months, you'll apply under 2027 rules. If you finish in 18+ months, definitely under 2027 rules. Plan for the new standards from day one.
Week-by-week timeline: what 1,500 hours actually looks like
Here are three realistic timelines, depending on how much you can commit weekly.
Timeline A: Aggressive (12 months) — 30–32 hours/week
Week | Focus | Cumulative Hours |
Weeks 1–4 | Onboarding, supervisor contract, initial restricted-heavy work (shadowing, RBT-level tasks under supervision) | ~125 |
Weeks 5–12 | Building unrestricted activity exposure — observing assessments, contributing to data analysis | ~375 |
Weeks 13–24 | Increasing unrestricted ratio — drafting parts of behavior plans, leading parent training segments | ~750 |
Weeks 25–36 | Independent unrestricted work under supervision — running full assessments, writing programs | ~1,125 |
Weeks 37–48 | Final stretch — leading cases, completing required observations, preparing application | ~1,500 |
Weeks 49–52 | Application submission and exam prep | 1,500 |
Timeline B: Balanced (18 months) — 20–21 hours/week
This is the most common timeline for working RBTs pursuing certification while continuing client work.
Months | Focus | Cumulative Hours |
Months 1–3 | Foundation: supervisor relationship, contract, restricted-activity exposure with supervisor observation | ~250 |
Months 4–9 | Skill expansion: graduated exposure to unrestricted activities; first solo assessments under supervision | ~750 |
Months 10–15 | Independent practice: leading interventions, full unrestricted activity ratio (60%+) | ~1,250 |
Months 16–18 | Wrap-up: final supervised observations, documentation review, application prep | 1,500 |
Timeline C: Part-time (24 months) — 15–16 hours/week
Common for trainees with significant outside commitments (parenting, second job, ongoing coursework).
Months | Focus | Cumulative Hours |
Months 1–6 | Slow ramp: 60–70 hours/month, restricted-heavy as you build foundation | ~375 |
Months 7–12 | Building unrestricted ratio; some months may be lighter due to other commitments | ~750 |
Months 13–18 | Independent unrestricted work with supervisor support | ~1,125 |
Months 19–24 | Final hours, observations, application | 1,500 |
A few realistic notes on these timelines:
The 20-hour monthly minimum is a hard floor. Under both 2022 and 2027 rules, any month with fewer than 20 hours doesn't count at all. If you have a slow month, those hours are lost.
The 130-hour (2022) or 160-hour (2027) monthly cap matters. You can't bank hours by working 200 hours in one month — anything over the cap doesn't count.
Vacation, illness, and burnout are real. Plan for at least 4 weeks of reduced capacity across a year. If you push to a 12-month timeline with no buffer, one bad month derails it.
What counts vs. what doesn't — the clear breakdown
The single biggest source of disqualified hours is trainees logging time on activities that don't qualify. Here's the line.
Activity | Counts as Restricted? | Counts as Unrestricted? | Doesn't Count |
Direct 1:1 ABA implementation with client | ✓ | ||
Running discrete trial training | ✓ | ||
Data collection during direct sessions | ✓ | ||
Conducting an FBA (functional behavior assessment) | ✓ | ||
Writing a behavior intervention plan | ✓ | ||
Analyzing graphed data for clinical decisions | ✓ | ||
Training parents or RBTs on intervention plans | ✓ | ||
Meeting with your BCBA supervisor (the supervision itself) | ✓ | ||
Co-treating with OT or speech therapy | ✓ (with caveats) | ||
Drive time between clients | ✗ | ||
Time at billing or administrative-only meetings | ✗ | ||
Time spent on coursework or studying | ✗ | ||
Cleaning toys or session materials | ✗ | ||
Time on non-behavior-analytic services | ✗ | ||
Personal break time during your shift | ✗ |
The 60% unrestricted threshold is the rule trainees most often fail. If you're an RBT moving toward BCBA certification, your employer needs to actively shift your work toward unrestricted activities — otherwise you can complete 1,500 total hours and still not qualify because your unrestricted percentage is too low.
An hour-tracking template you can use
Whether you use a spreadsheet, an app (CentralReach, Theralytics, Ripley's Fieldwork Tracker), or a paper log, every entry needs the same data points. Here's the structure to copy into your own tracker.
For each work session:
Field | Example Entry |
Date | 2026-05-12 |
Start time | 9:00 AM |
End time | 12:30 PM |
Total hours | 3.5 |
Restricted hours | 1.5 |
Unrestricted hours | 2.0 |
Activity description | Conducted preference assessment with client; drafted BIP revision; supervisor observation 11:00–11:30 |
Supervisor present | Yes (30 min direct observation) |
Setting | In-home |
Monthly summary you'll need (matches both M-FVF forms):
Total hours accrued
Restricted hours total (must not exceed 40%)
Unrestricted hours total (must be at least 60%)
Number of supervision contacts (2022) AND total duration of supervision in minutes (2027)
Number of direct client observations by supervisor
Supervisor name and signature
The seven-year rule: Both you and your supervisor must retain all fieldwork documentation, including signed Monthly Fieldwork Verification Forms (M-FVFs), for at least seven years. The BACB can audit your hours, and reconstructing them later is functionally impossible. Set up your tracker on day one.
A real-world scenario: what 1,500 hours actually feels like
Maria, RBT to BCBA in 16 months
Maria started her concentrated fieldwork in January, working 25–30 hours a week at an ABA clinic in Atlanta. Her first three months were 80% restricted — she was still mostly running sessions as an RBT. By month four, her BCBA supervisor began assigning her parent-training segments and intake observations, shifting her unrestricted percentage upward. By month eight she was conducting full preference assessments and drafting behavior plan sections. By month twelve, her ratio had flipped — most of her work was unrestricted activity under supervision. She passed the BCBA exam four months after submitting her hours.
What made it work: a supervisor who actively built her unrestricted exposure into the role, a clinic with administrative support for her documentation, and a tracker she updated daily — not weekly, daily.
How Blossom ABA supports trainees
If you're an RBT working toward BCBA certification, the fastest path is usually through an employer who actively supports your trainee status — not one where you're "just" doing RBT-level work and hoping to accumulate restricted hours.
Blossom ABA Therapy hires RBTs across Georgia, Tennessee, Virginia, North Carolina, and Maryland, and our BCBAs supervise trainee hours as part of our team development model. We build unrestricted activity exposure into trainee roles intentionally, so the path to certification doesn't stall on missing hour types.
If you're already an RBT looking for a supervisor or considering a role transition, explore career opportunities with Blossom ABA →.
What slows trainees down most
Six things consistently cause hours not to count or timelines to slip:
Too few unrestricted hours. Logging 1,500 total hours but only 30% unrestricted means you don't qualify, and there's no after-the-fact fix.
Below the 20-hour monthly minimum. A vacation week or a slow month with 18 hours zeroes the whole month out.
Missing supervisor signatures on M-FVFs. Forms must be signed at the end of each supervisory period (each month). Catching this six months later is a nightmare.
The supervisor isn't BACB-current. A lapsed BCBA can't supervise you. Verify status quarterly at bacb.com.
Not tracking duration of supervision under 2027 rules. If you apply in 2027 and only have contact counts, not minutes, you may be missing required documentation.
Losing the seven years of records. A laptop crash with no backup has cost trainees their certification. Cloud backup, paper backup, or both.
Frequently asked questions
Can my hours from before I started a master's program count?
No. Under both 2022 and 2027 BACB requirements, fieldwork hours only count when accrued while you're enrolled in a qualifying graduate program or after you've completed the required coursework. Hours worked as an RBT before that don't apply, regardless of how high-quality the work was. Plan to start tracking hours only after your program officially recognizes you as eligible to accrue them.
Can I count travel time between client homes?
No. Drive time, time between sessions, and any time you're not actively engaged in restricted or unrestricted behavior-analytic activities doesn't count toward your 1,500 hours. This catches a lot of in-home trainees off guard — if you spend two hours driving between three clients, none of that drive time counts even though you're "at work."
What happens if my supervisor leaves before I finish?
Your accrued hours under that supervisor still count, as long as they were properly documented and signed off on monthly. You'll need to find a new qualified BCBA supervisor and continue accruing hours under them. The transition itself doesn't cost you hours — just makes sure your final F-FVF documentation reflects both supervisors and the hour split between them.
Is concentrated fieldwork harder to find than supervised fieldwork?
Yes, generally. Concentrated fieldwork requires 10% supervision (rising to 7.5% in 2027), which is a meaningful time commitment for the supervising BCBA — and many ABA providers don't structure their staffing to support that level of oversight. If concentrated isn't available at your current employer, the 2,000-hour standard pathway is a legitimate alternative, just a longer timeline.
What happens to my hours if I take a break from fieldwork?
Hours accrued stay on your record as long as you complete certification within five continuous years from your first accrued hour. Take a six-month break? Fine, as long as you finish within five years total. Take a two-year break? Still allowed, but your runway is now shorter. The five-year window is non-negotiable — hours older than that drop off.
The path through 1,500 hours is mostly about consistency, not heroics. Pick a sustainable weekly target, track every hour the day it happens, work with a supervisor who's invested in your unrestricted exposure, and check your numbers monthly against your target.
