225 ILCS 6/40
The Department may issue a license as a behavior analyst or assistant behavior analyst to an applicant licensed under the laws of another jurisdiction if the requirements for licensure in that jurisdiction are, on the date of licensure, substantially equivalent to the requirements of this Act or to any person who, at the time of the applicant's licensure, possessed individual qualifications that were substantially equivalent to the requirements then in force in this State.
An applicant under this Section shall pay the required fees. An individual applying for licensure as a licensed behavior analyst or assistant behavior analyst who has been licensed in another United States jurisdiction for 10 consecutive years without discipline is not required to submit proof of completion of the education, professional experience, and supervision required in Section 25 or 30.
An individual with 10 consecutive years of experience must submit certified verification of licensure from the jurisdiction in which the applicant practiced and must comply with all other licensing requirements and pay all required fees. If the accuracy of any submitted documentation or the relevance or sufficiency of the coursework or experience is questioned by the Department or the Board because of a lack of information, discrepancies or conflicts in information given, or a need for clarification, the applicant seeking licensure may be required to provide additional information.
An applicant has 3 years after the date of application to complete the application process. If the process has not been completed in 3 years, the application shall be denied, the fee shall be forfeited, and the applicant must reapply and meet the requirements in effect at the time of reapplication.
225 ILCS 6/40