Undue hardship, as used herein, shall include the inability of an employer to provide services which are required by and in compliance with all federal and state laws, including regulations or tariffs promulgated or required by any regulatory agency having jurisdiction over such services or where the health or safety of the public would be unduly compromised by the absence of such employee or employees, or where the employee's presence is indispensable to the orderly transaction of business and his or her work cannot be performed by another employee of substantially similar qualifications during the period of absence, or where the employee's presence is needed to alleviate an emergency situation. The employer shall have the burden of proof to show undue hardship.
1B. For an employer in the private sector, by himself or his agent, because of the age of any individual, to refuse to hire or employ or to bar or to discharge from employment such individual, or to discriminate against such individual in compensation or in terms, conditions or privileges of employment, unless based upon a bona fide occupational qualification.
1C. For the commonwealth or any of its political subdivisions, by itself or its agent, because of the age of any individual, to refuse to hire or employ or to bar or discharge from employment such individual in compensation or in terms, conditions or privileges of employment unless pursuant to any other general or special law.