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

Carelessness Does Not Constitute Grounds for a Right to Be Consulted

12 October 2026

The Enterprise Chamber of the Amsterdam Court of Appeal (the “Enterprise Chamber”) delivered its ruling on 28 April 2026 in a case brought by the Temporary Works Council (the “TOR”) of the Identification and Screening of Asylum Seekers Service (Dienst Identificatie en Screening Asielzoekers, “DISA”) (ECLI:NL:GHAMS:2026:1105). The Enterprise Chamber ruled that the TOR had no right to be consulted on the decision to treat the reorganisations at DISA and the Immigration and Naturalisation Service (IND) as separate processes, without transferring personnel between them. According to the Enterprise Chamber, the decision concerned the allocation of public-law responsibilities between government services and therefore fell within the scope of the political primacy principle set out in Article 46d of the Dutch Works Councils Act (Wet op de ondernemingsraden, or WOR). Notably, however, the Enterprise Chamber described the decision-making process as “highly careless”. This finding did not lead to a different legal conclusion.

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Employment, Employee Participation & Mediation

The Self-Employment Act: When Does It Provide Legal Certainty?

8 October 2026

The government aims to provide greater certainty and clarity for self-employed professionals and their clients. To that end, on 1 October 2026, it submitted the draft Self-Employment Act (Zelfstandigenwet) for public consultation. The proposed Act seeks to answer a fundamental question: when can businesses engage self-employed professionals, and when can individuals work as self-employed professionals, with certainty that the relationship does not constitute employment? By establishing clear rules in advance, the government aims to create a safe harbour for those who meet and comply with these requirements. What exactly does the proposed Self-Employment Act entail, and what does it mean for businesses engaging self-employed professionals?

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Employment, Employee Participation & Mediation

A Camel Hunt at the Office? Don’t Forget the Works Council!

6 October 2026

Anyone who has followed the media recently will have noticed the same debate recurring: should employees be required to come into the office more often? The term “camel hunting” regularly comes up in this context. Employers are seeking to avoid a working week with two distinct “humps”, characterised by busy Tuesdays and Thursdays and near-empty offices on the other days.

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