Sietske Bos-Bremmer

Sietske Bos-Bremmer

Associate | Attorney at law

Employment & Employee Participation

Sietske specialises in employment law, advising both large employers and employees on a range of matters such as dismissal (including summary dismissal), reorganisations, unacceptable behaviour in the workplace, incapacity for work and other HR-related issues. This means she can easily approach legal disputes from the perspective of both employer and employee, and keep sight of both parties’ interests. Sietske regularly provides training courses and webinars on current topics in employment law to HR professionals.

Sietske is an empathic, approachable attorney who likes to take a practical view of her cases. With her client’s interests at heart, she seeks out creative and surprising solutions with the aim of achieving the optimal result for her client, rather than the maximum.

Education

Sietske obtained both her Bachelor’s and Master’s degrees from Leiden University. She successfully completed her Master’s in Employment Law in 2021, graduating with her thesis on the topic of employer liability in the context of employee burnout.

Career

During her studies, Sietske worked as an external court clerk at the District Court of The Hague. She also volunteered at De Leidse Rechtwinkel, where she provided free legal advice in the area of employment law to Leiden residents with limited financial means. Sietske also undertook internships at a number of law firms, including De Clercq. She has been associated with De Clercq since 2021.

Sietske’s daily practice

In the area of employment law, Sietske mainly works on HR-related matters such as dismissal (including summary dismissal), unacceptable behaviour in the workplace, reorganisations, and incapacity for work. Her approach is aimed at finding practical solutions that will help her client move forward, and this quality makes her an excellent sounding board for HR consultants.

Selected cases

Summary dismissal

Providing advice and guidance to employers in handling and settling summary dismissals, and in the associated litigation.

Guidance in reintegration processes

Guiding employers in the reintegration process, on the one hand to ensure that they satisfy all of the obligations under the Eligibility for Permanent Incapacity Benefit (Restrictions) Act (Wet Verbetering Poortwachter) and avoid wage sanctions, and on the other to enable employees to return to work as soon as possible.

Unacceptable behaviour in the workplace

Advising employers on how to prevent unacceptable behaviour in the workplace, and which steps need to be taken in the event that an employee reports (anonymously or otherwise) unacceptable behaviour in the workplace to their employer.

Reorganisation

Guiding employers through the entire reorganisation process, including drafting the request for advice for the works council.

Stay up to date

The latest developments

Employment, Employee Participation & Mediation

HR in Healthcare – 1. Recruitment Process and the Duty of Due Diligence

10 September 2025

In the Netherlands, nearly 1.7 million people work in healthcare. And yet, there is still a significant staff shortage. These shortages present new challenges for executives and HR professionals. In practice, we see this sometimes leading to the recruitment of healthcare employees who ultimately turn out not to be well-suited for the sector. In this blog series, we will address a variety of employment law issues that may arise, from recruitment through to the termination of employment.

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Employment, Employee Participation & Mediation

Accrual of Vacation During Long-Term Illness: What Employers Need to Know

9 September 2025

Does an employee continue to accrue vacation even after two years of illness? The answer is yes, and this has important implications for employers.

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Employment, Employee Participation & Mediation

Employee Participation in Healthcare – From Formal Obligation to Effective Dialogue!

4 September 2025

Recently, the Innovation and Advisory Committee (IAC) of the Governance Committee for Healthcare published the report “Participation and Co-Determination in Healthcare: Towards Innovative Forms of (Co-)Decision-Making?''  The report makes clear that within the healthcare sector there is a need for more flexible, tailor-made, and integrated approaches to organizing participation and co-determination. Based on this report, Renate Vink-Dijkstra, together with Mirella Minkman, Michiel van Berckel Smit, and Daniel Waarsenburg, authored an article for the journal Goed Bestuur en Toezicht (Good Governance and Supervision). The central question addressed is how to ensure that participation is not merely a statutory obligation, but also a source of improved decision-making and genuine engagement.

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