Oklahoma Administrative Rules - Subchapter 17

• (a) The seal and signature of the licensee and the date of signing shall be placed on all final engineering specifications, reports, drawings, plans, design information, and calculations or final surveys, reports, plats, drawings, plans and calculations whenever presented to a client or any public agency to certify that the work thereon was done by the licensee or under the responsible charge of the licensee, as defined by O.S. Title 59, 475.2(9) and (12) and described in OAC 245:15-9-3(c). Working drawings or preliminary documents are not required to have a seal and signature if the working drawing or preliminary document contains a statement in large bold letters to the effect “PRELIMINARY, NOT FOR CONSTRUCTION, RECORDING PURPOSES, OR IMPLEMENTATION.” Permit sets or construction drawings, which are not final, may be signed and sealed for the purpose of submitting the work to the Authority Having Jurisdiction (AHJ) for their review, comment and/or approval, but must be clearly marked in large bold letters NOT FOR CONSTRUCTION.
• (b) The seal and signature shall be placed on all copies, tracings, or other reproducible documents listed above so that the seal and signature will be reproduced when copies are made.
• (c) When the document contains more than one sheet, the first or title page shall be sealed and signed by the licensee who was in responsible charge. Two or more licensees may affix their signatures and seals provided that a note under the seal designates the specific subject matter for which each is responsible. In addition, each sheet shall be sealed and signed by the licensee or licensees responsible for that sheet. When a firm performs the work, each sheet shall be sealed and signed by the licensee or licensees who were in responsible charge of that sheet. A licensee not practicing as, or through a firm shall also include contact information to include at a minimum their address and phone number.
• (d) ​The licensee shall sign and seal only work within the licensee’s areas of competence, as designated in the records of the Board.
• (e) Any revision to a document containing the seal and signature of a licensee shall be described and dated. If the revisions are not done by the original licensee, the revisions must also be signed and sealed by the licensee in responsible charge of those revisions.
• (f) Unlicensed persons shall not perform engineering or surveying work in this state, to subsequently have it signed and sealed by a licensed professional engineer or professional surveyor licensed in the state of Oklahoma. 
• (g) Drawings, reports, or documents that require a signature may be signed using an electronic or digital signature. The electronic or digital signature must be:

(1) Unique to the person using it;
(2) Capable of verification; and
(3) Under the sole responsibility and control of the licensee affixing it.

(A) A scanned image or other reproduction of an original signature may be used in lieu of an original signature or electronic or digital signature if accompanied by an original handwritten date.

(B) An electronic or digital signature having an electronic authentication process attached to or logically associated with the electronic document may also be used and does not need to include the handwritten date but must be dated. In this instance, the electronic or digital signature shall be linked to a document in such a manner that the data in the document can be verified as being unaltered since the time that the digital signature was affixed.

• (h) Successor licensee - In circumstances where a licensee in responsible charge of the work is unavailable to complete the work, or the work is a site adaptation of a standard design plan, or the work is a design plan signed and sealed by an out-of-jurisdiction licensee (not a site adaptation of a standard design plan), a successor licensee may take responsible charge over, and complete the work, in accordance with the provisions of OAC 245:15-9-3(c). The burden is on the successor licensee to demonstrate such compliance. The non-professional services, such as drafting, need not be redone by the successor licensee but must clearly and accurately reflect the successor licensee’s professional work.
• (i) Record drawings prepared to reflect changes made during construction based on the record of changes made to construction drawings and changes to the construction observed by the licensee or on the licensee's behalf or reported by contractors is deemed a drafting service and shall not require a licensee's seal, signature, and date of signature.
• (j) In the case of a firm, each separate document, the first page of a bound document, and, in the case of multiple licensees, the portion of the work for which each firm is responsible, shall also show the name of the firm, the firm's Certificate of Authorization number and contact information for the firm.
• (k) Engineering or surveying technical submissions given to an architect for a project must be signed and sealed by the professional engineer or professional surveyor in responsible charge of the work prior to the architect taking responsible charge of the work as the prime professional for the project.
• (l) Consultants hired to do work on behalf of the firm must sign, seal, and date their work and include their contact information, and Certificate of Authorization information, if applicable, on the work. Consultants shall not be the designated managing agent for the firm to which they are consulting.