The following link gives access to all documents, some of which are only available in German.

Address
AUSGLEICHSKASSE ARBEITGEBER BASEL
Viaduktstr. 42
4002 Basle
Telephone 061 285 22 22
Telefax 061 285 22 33
E-mail info.ak40@ak40.ch
Opening hours
Counter
08:30-11:45 13:30-16:30
Phone reception
08:00-12:00 13:15-17:00