On September 18 and 19, 2026, the Herbstworkshop of the Wissenschaftliche Kommission Personal took place at the Free University in Bolzano, Italy. During the autumn workshop, Laszlo Goerke presented joint work with Sven Hartmann and Yue Huang on Workplace Co-determination and Supplementary Compensation. The authors are very grateful to the discussant and the other participants for their great comments and suggestions.