N.C. Gen. Stat. § 120-35: Payment for expenses.

Actual expenses for the joint operation of the General Assembly shall be paid by the State Treasurer upon authorization of the President pro tempore of the Senate and the Speaker of the House of Representatives. Expenses for the operation of the Senate shall be paid upon authorization of the President pro tempore of the Senate. Expenses for the operation of the House shall be paid upon authorization of the Speaker of the House. (1969, c. 1184, s. 5; 1971, c. 1200, s. 6.)