The purpose of this Agreement is to promote harmonious relations between the Employer and the. View a searchable archive of active collective bargaining agreements from public employers throughout Ohio.A Project Labor Agreement (PLA) is a type of collective bargaining agreement unique to the construction industry. Employers have a legal duty to bargain in good faith with their employees' representative and to sign any collective bargaining agreement that has been reached. Collective bargaining agreements (CBAs) are available from the Office of LaborManagement Standards (OLMS) Online Public Disclosure Room.