The various pension regulations prescribe different entry thresholds for occupational benefits insurance. Some have no threshold at all, making it easier to join. PUBLICA used to distinguish between primary and secondary employment, but following the modernisation of its pension offering, this is no longer the case.
How can I obtain occupational pension insurance for both of my part-time jobs?
If you work for more than one employer and all of them are affiliated to the same pension plan, your salaries are added together. You will be insured with that pension plan for every job you do.
If you are unsure whether all your jobs are added together and so can be insured together, talk to your contact.