Section 26. Notwithstanding any provisions of law to the contrary, the provisions of section 5 of chapter 150A shall so far as apt apply to the authority and its employees, excepting directors, executives and those confidential employees representing the authority and dealing with employee organizations. Nothing in this section shall be construed as conferring upon the employees of the authority the right to strike, nor as detracting from the obligations of the authority and the employees to submit all grievances and other disputes to arbitration.