Kernrechtsfrage
Which regulations govern the rescission of the supplementary pension contract: the 1999 or 2006 pension rules?
Extrahierter Entscheid
The 1999 rules apply, because the legally relevant conduct was the alleged nondisclosure when joining the supplementary pension plan, not the later rescission declaration.
Extrahierte Begründung
In supplementary occupational pensions, the consequences of a breach of the duty to disclose are determined by the rules in force when the insured person entered the plan and the relevant facts occurred. A later amendment cannot retroactively govern the rescission, except for a special case not present here.