Partial coverage by the State of the replacement income under an early retirement allowance agreement may only be granted if the national professional agreement has determined :
1° Its scope of application;
2° The conditions under which employees are entitled to early retirement;
3° The age conditions for entitlement;
4° The amount of the allowance paid to the beneficiary and the terms of payment;
5° The conditions under which the employees concerned may return to work in the company;
6° The period during which employees may take part in the activity cessation measures, with the State only being able to commit itself if the duration of this period does not exceed five years.