Social Security Act: Business registration address does not equal actual work location for liability purposes.

The Supreme Court dismissed the contractor's cassation appeal, sending the case back to the appellate court for a new ruling on social security contributions. The contractor argued that a formal business registration address did not prove the actual location of work, which was frequently performed outside the registered premises. The court held that registration alone is insufficient and emphasized the need to examine the material organization of work and the employer's direct influence on conditions.