Section 10C. (1) Any employer, and the recognized or certified and exclusive representative of its employees may agree by collective bargaining to establish certain binding obligations and procedures relating to workers' compensation; provided, however, that the scope of the agreement shall be limited to:
(a) benefits supplemental to those provided in sections thirty-four, thirty-four A, thirty-five and thirty-six;
(b) an alternative dispute resolution system which may include but is not limited to arbitration, mediation and conciliation;
(c) the use of a limited list of providers for medical treatment;
(d) the use of a limited list of impartial physicians;
(e) the creation of a light duty, modified job or return to work program;
(f) the adoption of twenty-four hour health care coverage plan;
(g) the establishment of safety committees and safety procedures; and
(h) the establishment of vocational rehabilitation or retraining programs.
[There is no subdivision (2).]