Okla. Stat. tit. 61, § 61-223

A. On all construction contracts exceeding Twenty-five Thousand

Dollars ($25,000.00) in value an owner shall make progress payments

to the prime contractor for work performed and materials properly

stored, within thirty (30) calendar days after a proper invoice is

submitted to the owner or a representative designated by the owner.

B. An owner or entity designated by the owner, may not reduce a

proper invoice of a prime contractor without detailing and

forwarding to the prime contractor, within fourteen (14) calendar

days of receipt of the proper invoice, the reasons for reduction.

The reduction may not be more than an amount that is reasonable to

correct the work, as set forth in writing.

C. If a contracting entity has had their proper invoice reduced

by another entity all other affected entities having a construction

Oklahoma Statutes - Title 61. Public Buildings and Public Works Page 69

contract with the contracting entity shall be notified within seven

(7) calendar days. Except as affected by a prior reduction, a prime

contractor or subcontractor may not reduce the proper invoice of

another subcontractor, sub-subcontractor, or material supplier

without detailing and forwarding to the subcontractor, sub-

subcontractor, or material supplier, within seven (7) calendar days

of receipt of the proper invoice, the reasons for reduction. A

prime contractor, subcontractor, or sub-subcontractor may also

reduce a payment of a contracted party from a previous proper

invoice. Any such reductions may not be more than an amount that is

reasonable to correct the reasons for reduction, as set forth in

writing. Any prime contractor, subcontractor or sub-subcontractor

may be exempt from notification if the reduction is less than one

percent (1%) of its net proper invoice or is due to mathematical

errors.