Enforcement means legal collection of unpaid debt or invoice. We at FREE! follow the directions from legal authorities and we'll collect the debt with their directions. Enforcement is usually ⅓ from your salary and since your salary is occasionally paid, we can't necessarily take in account of the protected portion. Protected portion means an amount in euros, that cannot be enforced from your salary.
Almost always the person being enforced is aware of the situation and invoices in enforcement will not be instantly deducted from your salary. You can get more information for this matter from your own enforcement agent.