What approach do experts recommend for freelance work, project roles and bogus self-employment risks?

For freelance work, project roles and bogus self-employment risks, a separate role model with risk indicators and borderline-case checks is the most robust approach. Decision criterion: fewer misclassifications and fewer operational grey areas in freelance role profiles over at least two review cycles. Specifically: separate role classes for jobs, projects and freelance work; supplement freelance roles with risk fields. (Sources: Nachweisgesetz Gesetze im Internet, DRV Scheinselbststaendigkeit)