Key legal question
Whether the insured person's clinic work from 2002-2003 was self-employed or gainful employment subject to AHV contributions
Extracted holding
The activity was predominantly dependent employment; the amounts constituted massgebender Lohn subject to AHV contributions.
Extracted reasoning
The contractual freedom to accept or refuse individual assignments did not outweigh the dependency on the clinic's organization, instructions, premises and infrastructure, and there was no substantial entrepreneurial investment or loss risk.