Concentrated vs Supervised BCBA fieldwork hours

Every BCBA trainee accrues fieldwork under one of two types, and most people meet the choice as a single number. Concentrated Supervised Fieldwork asks for 1,500 hours where Supervised Fieldwork asks for 2,000, so it reads as 500 hours saved.

The saving is real. What it costs is less obvious, because it is not paid in hours. It is paid in supervision, in every month you file that way, and a month that falls short of the higher standard does not count as Concentrated.

What actually differs

Most of the two types is identical. The supervisory period is one calendar month either way, the monthly hour range is the same, group supervision is capped at 50% of supervised hours in both, and both require at least 60% unrestricted activities. Four things change.

Fewer hours, more supervision

The percentage is what makes Concentrated concentrated, and it works against the smaller total. Take the minimum supervision each type implies across a whole fieldwork period, assuming every month sits exactly at its requirement.

Concentrated fieldwork requires more supervision in total than Supervised fieldwork does, not less. Under the current standards it is half as much again, for 25% fewer fieldwork hours. That is the trade the name is describing: the same body of experience compressed into less time, held to a denser standard while it happens.

The saving that does exist is calendar time. Both types cap a month at the same number of hours, so the smaller total simply arrives sooner.

How long it takes

This is the question trainees ask each other most, and the honest answer is a range rather than a number, because it depends almost entirely on how many hours a month you can actually accrue. What the requirements fix is the two ends of that range.

Hours a month means fieldwork hours, not hours worked. A full-time job rarely converts one to one, because only behavior-analytic activity tied to a client counts at all.

You cannot go faster than the cap. A month counts at most 160 hours from 2027, or 130 before it, however much you work. So even flat out, Supervised Fieldwork takes about a year and Concentrated about nine months. There is no version of this that finishes in a summer.

The observation requirement is the one that most often decides whether a month qualifies, and it is measured in cumulative minutes from 2027 rather than as a single visit.

And you cannot go slower than the window. The other end is a rule people meet late:

Between those two ends, the pace is set by your placement rather than by your ambition, which is also what decides whether Concentrated is realistic: the higher supervision percentage has to be met in every month you file that way, and it is your supervisor who has to provide it.

The choice is made per month

This is the part that surprises people. Neither type is a setting you choose once at the start of your fieldwork. The Handbook is explicit:

Two things follow from that sentence, and both matter more than the headline numbers.

You can mix. A month with heavy supervision available can be filed as Concentrated; a quieter month can be filed as Supervised. Nothing requires you to commit to one for the duration.

A type is all or nothing within a month. Filing a month as Concentrated means that month has to meet the Concentrated standard, not most of it. If the supervision percentage lands under the requirement, the hours have not met the requirements of the type they were filed under, and how the month resolves is a decision for the supervisor who signs it.

The practical reading is that Concentrated suits trainees whose supervisor has genuinely committed the time, month after month, rather than trainees who want to finish sooner and hope the supervision materializes.

Mixing the two, and where 1.33 comes in

If your record contains both types, the totals are not directly comparable, so the Handbook gives a method for estimating whether you have reached the requirement:

Three limits on that multiplier are worth holding on to, because between them they cause most of the confusion around Concentrated hours.

It only applies to mixed records. If all your hours are Concentrated, the requirement is 1,500 actual hours. The multiplier never reduces 1,500 to a smaller number.

It never reaches a form. The Handbook says trainees should record only the actual hours accrued on the Monthly Fieldwork Verification Form, the Final Fieldwork Verification Form and in the certification application, not the adjusted total. The multiplier exists to answer “am I there yet,” nothing else. It also plays no part in your restricted and unrestricted split, which is measured on actual hours.

An audit asks about it. Where hours have been adjusted to meet the requirement, the Handbook says trainees must indicate which ones in the Fieldwork Audit Log. That is easier to answer from a record that kept each month's type alongside its hours than from a spreadsheet of totals, and putting adjusted hours on a form instead of actual ones is a common and costly mistake.

Which one fits

The decision is rarely about ambition. It is about what your placement can actually supply.

Concentrated tends to work when your supervisor is on site and sees you regularly, when supervision is part of how the organization runs rather than something scheduled around billable time, and when you can absorb a longer observation requirement each month.

Supervised tends to work when supervision is remote or arranged around a busy caseload, when your hours vary a lot month to month, or when you are supervised by someone carrying several trainees. A lower percentage of a larger number is easier to protect.

And because the choice is monthly, the honest answer for many people is both: file the months that clear the higher bar as Concentrated, file the rest as Supervised, and let the record show what actually happened rather than what was planned in advance.

Keeping the type attached to the month

Whichever way you go, the type belongs to the month and needs to travel with it. The requirement checks that apply to a month depend on it, the verification form states it, and an audit asks about it years later.

In FieldworkABA each month carries its own fieldwork path, and the requirement cards for that month follow it: the supervision percentage you are measured against changes when the path does, so a month filed as Concentrated is checked against the Concentrated standard rather than a general one.

Common questions

Sources

• BCBA Handbook, BACB, updated 06/2026. Overview of Fieldwork Requirements tables for both standards, Number of Hours by Fieldwork Type, and Combining Fieldwork Types to Determine Total Hours.