The administrative and financial supervision of labour unions by the State, and their revenues and expenditures, and the method of payment of membership dues to the labour union, shall be regulated by law. Labour unions shall not use their revenues beyond the scope of their professional aims, and shall keep all their funds in State banks. Workers and employers have the right to conclude collective bargaining agreements in order to regulate reciprocally their economic and social position and conditions of work. The procedure to be followed in concluding collective bargaining agreements shall be regulated by law. More than one collective bargaining agreement at the same place of work for the same period shall not be concluded or put into effect.
Workers have the right to strike if a dispute arises during the collective bargaining process.
The procedures and conditions governing the exercise of this right and the employer's recourse to a lockout, the scope of both actions, and the exceptions to which they are subject shall be regulated by law. The right to strike, and lockout shall not be exercised in a manner contrary to the principle of goodwill to the detriment of society, and in a manner damaging national wealth. During a strike, the labour union is liable for any material damage caused in a workplace where the strike is being held, as a result of deliberate negligent behaviour by the workers and the labour union. The circumstances and places in which strikes and lockouts may be prohibited or postponed shall be regulated by law. In cases where a strike or a lockout is prohibited or postponed, the dispute shall be settled by the Supreme Arbitration Board at the end of the period of postponement.