Insurance court held mutual liability agreements between employer associations do not bind third parties regarding pension contributions.

The insurance court upheld the pension board's decision against an employer association, ruling that internal agreements on liability distribution cannot bind external parties. The court noted that while associations are jointly liable for pension contributions arising from employment relationships, their private contracts regarding responsibility allocation lack effect against third parties. Consequently, the decision was not overturned as the legal principle of external non-bindingness of internal agreements was correctly applied.