This document discusses cross-border pension funds and the supervision of them by the Belgian FSMA. It notes that there is diversity in occupational pension plans across countries with varying social and labor laws. The FSMA provides flexible oversight of cross-border pension funds, allowing for ring-fencing of assets and oversight of financial aspects like funding plans and investment policies. The FSMA also oversees adherence to the prudent person principle through requirements for openness, governance, and risk management. Currently there are 9 Belgian pension funds operating cross-border in countries like Luxembourg, Netherlands, and Ireland.