The Office of Dispute Resolution consists of hearing officers, mediators, arbitrators, investigators and other skilled professionals who attempt, through the use of pre-hearing investigative conferences, hearings, mediation, deferral to arbitration and other dispute resolution procedures, to resolve any labor dispute brought to the attention of the DLR. Such staff may be assigned to investigate labor disputes pursuant to section 11 of M.G.L. c. 150E, to mediate labor disputes pursuant to Section 9 of Chapter 150E, to assist the Joint Labor Management Committee in the investigation of disputes involving municipal police and fire departments and to perform such other duties as the DLR may require.