It's a bit of splitting hairs on this one, but if they will sign off, and you are not claiming any part time that would require time sheets or pay-stubs, then I don't think you will have a problem.
Review the Form 4B and instructions and make sure your “boss” will sign off.
Both the instructions and question 9 specifically refer to working for the same Employing organization.
And there is a perjury statement under the affirmation.
The nature of your “employment” is most likely structured in a way to be both beneficial to your and your “boss” and perhaps questionable if not outright illegal in regards to employment law, so I'm thinking anyone hiring/paying you under those conditions would probably have no problem with a little perjury, but who am I to judge.
I did the 15 years experience, submitted with both full time and part time, all at the same “employing organization” DBA sole prop.
No documents were questioned.
I added my part time because it meant I got to send in my app 7 weeks sooner (14 weeks part time summer of 2001). It still took 20+ weeks to turn it around.
The temptation to fudge my employment to send in the app sooner was VERY REAL, but ultimately I chose the ethical approach and waited out the clock just in case they came to verify records etc.
The call or visit never came though. But my docs were bullet proof and legit, down to pay-stubs and W2's. I didn't even claim the week I was under the 20 hour limit by a half hour for a lunch break.
Is it still ethical if you only followed the rules so you don't get caught?
I had too much riding on that 15 years experience pathway to push the limits by a few weeks and ultimately lose on the back end.
If the 15 years didn't work I would have needed 30 credit hours which would have taken me probably 3 years doing it nights and weekends while carrying my client load.
The CPA must have acted in a supervisory capacity to the applicant in the same employing organization.
https://www.op.nysed.gov/prof/cpa/cpa4b.pdf
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