Questão jurídica principal
Whether the pension contribution claims were time-barred
Decisão extraída
The claims were not time-barred; the five-year period began with the affiliation agreement of 28 October 1999, so the debt collection request of 1 April 2004 was in time.
Fundamentação extraída
For retroactive affiliation where the employer failed to join in time, the special case-law rule applies and the limitation period starts at affiliation, not at each earlier due date; LPGA does not apply because the LPP did not expressly extend it to occupational pension law.