Sec. 27.5. Before a revision or adjustment to a pay plan developed under section 27 of this chapter for which all employees are generally eligible may take effect, the director shall submit the proposed pay plan revision or adjustment to the budget committee for review. The requirement under this section does not apply to an increase in an employee's salary or rate of pay that is:
(1) based on an evaluation under section 36 of this chapter;
(2) based upon a promotion granted to the employee;
(3) made specifically to retain the employee; or
(4) made for any other reason for which other employees are not eligible.