Income tax; definition; employees; aerospace; higher education; effective date.

The definition of 'Qualified Employer' was updated to explicitly include four-year institutions of higher education that hold an R1 research designation and maintain a research institute dedicated to aerospace research and technology.

The definition of 'Qualified Employee' was adjusted to remove ambiguity regarding individuals who were not full-time engineers prior to earning their degrees, ensuring they are not automatically excluded from the credit.

The definition of 'Qualified Employee' was revised to clarify that individuals employed by or contracting with these specific R1 research institutions are eligible for the credit, provided they are actively working within the dedicated aerospace research institute.

The document header was updated from 'Proposed Committee Substitute' to 'Committee Substitute' to reflect the final version adopted by the House committee.

The definition of 'Aerospace sector' was updated to clarify that it includes private or public organizations engaged in aerospace manufacturing, maintenance, repair, supply, services, research, and education/training.

A new definition for 'Institution' was added to specify that it includes institutions within The Oklahoma State System of Higher Education or any other public or private accredited college or university.

The definition of 'Qualified employer' was modified to explicitly include four-year institutions of higher education that have an R1 research designation and a dedicated aerospace research and technology institute.

The bill header and formatting were changed from 'Engrossed' to 'Proposed Committee Substitute,' indicating this is a revised version prepared by the committee for further review.

The document header was updated from 'STATE OF OKLAHOMA' to 'ENGROSSED HOUSE' and the bill number was added to the header, indicating the bill has passed both legislative chambers.

Page numbering and footer text were updated to reflect the engrossed status, changing from 'Req. No. 14268' to 'ENGR. H. B. NO. 4273'.

Minor formatting adjustments were made to the text layout, including the removal of bracketed subject matter descriptors and slight reflowing of paragraphs.