Oklahoma constitution
Article XXIII: miscellaneous

Section 1 - Eight hours shall constitute a day's work in all cases...

Section 1a - E. Any person who directly or indirectly violates any provision...

Section 2 - The contracting of convict labor is hereby prohibited.

Section 3 - The employment of children, under the age of fifteen years,...

Section 4 - Boys and girls under the age of eighteen years shall...

Section 5 - The Legislature shall pass laws to protect the health and...

Section 6 - The defense of contributory negligence or of assumption of risk...

Section 7 - The right of action to recover damages for injuries resulting...

Section 8 - Any provision of a contract, express or implied, made by...

Section 9 - Any provision of any contract or agreement, express or implied,...

Section 10 - Except wherein otherwise provided in this Constitution, in no case...

Section 12 - All the proceeds, assets and income of any public retirement...