Mr Jan Proesmans > Stibbe > Brussels, Belgium > Lawyer Profile


Work Department

Employment and Benefits




Jan Proesmans advises and represents a broad range of public and private clients in matters relating to employment law and social security law. Jan has a broad expertise in individual and collective employment law, including transfers of undertaking, complementary pensions, salary optimisation and benefits. Moreover, he specialises in pension law, insurance law, the governance and structure of pension funds, and all pension issues relating to both the private and the public sector. In addition, he defends his clients’ interests in complex litigation matters with respect to employment law issues, particularly occupational pension schemes. Furthermore, Jan is often asked to draft or amend pension regulations and he confidently handles international employment situations and the pension aspects of corporate transactions.


Dutch, French, English


  • Member of the Belgian Association of Pension Institutions (PensioPlus); participation in several of its specialist working groups which aim at providing high-level input to the government and social partners on legislative proposals


  • Master’s degree in Law from the Katholieke Universiteit Leuven (2009)
  • Admitted to the Antwerp Bar in 2009
  • Complementary master’s degree in Pension Law from the Katholieke Universiteit Leuven (2013)
  • Admitted to the Brussels Bar in 2014
  • With the Brussels office of Stibbe since 2014
  • Certificate from the multidisciplinary PensioPlus Academy (2015)

Lawyer Rankings

Belgium > Insurance

The far-reaching practice at Stibbe incorporates expertise in insurance litigation and arbitration, employee benefits and corporate and M&A work. Other areas of strength for the unit include advising of the financial regulatory aspects of the insurance sector, tax mandates, and insurance issues arising from major infrastructure projects and public contracts. Oliver Stevens heads up the ‘very knowledgeable’ team; his longstanding experience in the space includes dealing with financial lines insurance, property insurance and litigation concerning the mis-selling of life insurance schemes. Corporate and capital markets expert Jan Peeters frequently advises on transactional work in the sector, and Marc Fyon has amassed considerable experience in corporate finance work. Complementary pensions expert Jan Proesmans and accredited mediator Sophie Bourgois are further recommended.

Belgium > Employment

Leading multinationals and Belgian corporate and public clients rely on Stibbe‘s comprehensive employment and pensions expertise, which encompasses restructuring projects, harassment and discrimination claims, and payment disputes and is particularly concentrated in the area of collective dismissals. The team handles contentious and non-contentious dismissals in the context of corporate reorganisations and internal investigations and also assists with dismissal-related trade union negotiations. Elisabeth Matthys, who is a key contact for this line of work, maintains close relations with clients in the sports sector and co-leads the team with Jérôme Aubertin, who has ‘exceptional knowledge’ of employment and social security litigation. Pensions and insurance expert Jan Proesmans is also recommended. Dieter Demuynck left the team in December 2022.