Italian Supreme Court upholds minimum contribution rule for collective bargaining contracts

The Court of Cassazione ruled that when multiple collective agreements exist, employers must calculate social security contributions based on the highest‑paid agreement, not the lower one they may apply to workers. The decision stems from a case involving a Lombardy social cooperative that used a lower‑wage UNCI agreement while INPS recalculated contributions using the higher‑wage CGIL‑CISL‑UIL agreement, resulting in a €74,500 difference over five years and sanctions. The Court confirmed that representativeness of the contract is determined by concrete data and that the burden of proof lies with INPS.

Italy’s wage index shows that average contractual pay rose 2.5% while consumer‑price inflation was 3.0%, producing a real purchasing‑power loss of about 0.5% per year. The gap varies across sectors, with public contracts lagging behind private ones and many workers awaiting renewal of collective agreements, extending the average waiting period.