(a) Except as expressly provided in subsection (c) of this section, nothing contained in this chapter or in the rules shall deny, limit or infringe upon the right of any employee in the classified service or any exclusive bargaining representative under Chapter 13 of Title 19.

(b) Except as expressly provided in subsection (c) of this section, nothing contained in this chapter or in the rules shall deny, limit or infringe upon any collective bargaining agreement or the authority and duty of this State or any agency thereof to engage in collective bargaining with the exclusive bargaining representative under Chapter 13 of Title 19.

(c) The rules adopted or amended by the Board under the following sections shall apply to any employee in the classified service represented by an exclusive bargaining representative or covered by a collective bargaining agreement under Chapter 13 of Title 19, except in the case of collective bargaining agreements reached pursuant to § 1311A of Title 19:

(d) The rules adopted or amended by the Board under the following sections shall not apply to any employee in the classified service represented by an exclusive bargaining representative to the extent the subject thereof is covered in whole or in part by a collective bargaining agreement under Chapter 13 of Title 19:

(e) The Secretary or the Secretary’s designee and the Board shall meet with the exclusive bargaining representative at reasonable times to negotiate in good faith with respect to any rule to be adopted or amended under §§ 5915 through 5921, 5933, 5935 and 5937 of this title and, to the extent the subject thereof is not covered in whole or in part by a collective bargaining agreement under Chapter 13 of Title 19, §§ 5922 through 5932, 5934 and 5936 of this title.

29 Del. C. 1953, § 5938; 56 Del. Laws, c. 376, § 7; 69 Del. Laws, c. 436, § 9; 76 Del. Laws, c. 178, § 5; 81 Del. Laws, c. 66, § 47.