Facts
[A.] , born in 1955, was self-employed as a sculptor and joined the Gemeinschaftsstiftung Pensionskasse für Unternehmer, Künstler und Freischaffende PUK (PUK) for occupational pension provision on 1 July 2003. In September 2004, he applied to the Disability Insurance (IV) for benefits, citing a depressive disorder, neurodermatitis and alcohol dependence. The Social Insurance Court of the Canton of Basel-Stadt awarded him a half disability pension from 1 June 2005. Subsequently, the PUK paid a disability pension, but later corrected it, as it had erroneously based it on a degree of disability of 100% instead of 59%. From December 2010, it paid a partial pension of CHF 316.40 per month. On 31 July 2012, the PUK informed the insured that it would suspend the current pension from 1 September 2012 until the full offsetting of the benefits wrongly received. The insured then filed a lawsuit with the Social Insurance Court of the Canton of Basel-Stadt, requesting that the PUK be ordered to continue paying a 59% disability pension from 1 September 2012 plus interest. The court upheld the claim.Considerations
The Federal Court dismisses the PUK's appeal, insofar as it is admissible: - The PUK, as a registered pension fund, is obliged to provide benefits to the insured. He was voluntarily insured with it as a self-employed person, in the more extensive, i.e. non-mandatory, area. - The cantonal court rightly assumed the local jurisdiction of the occupational pension court at the place of…