Questione giuridica chiave
Whether additional unrecorded contribution periods had to be credited in the individual account for pension calculation.
Decisione estratta
No correction was possible because the insured person did not prove that wages were subject to deducted social security contributions or that net wage agreements existed.
Motivazione estratta
Under Art. 30ter(2) AHVG and Art. 141(3) AHVV, correction of missing entries requires full proof. The claimant had no relevant documents or other convincing evidence; therefore evidentiary failure had to be borne by him.