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.

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The latest developments

Employment, Employee Participation & Mediation

When does a people issue become a board issue?

7 September 2026

Your best-performing executive may also be your biggest people risk. The numbers are excellent. Targets are being met. The business is growing. But people keep leaving the executive's team. HR receives informal concerns about leadership style. Employees say they do not feel comfortable speaking up. There is no formal complaint. No investigation. No established misconduct. So when should the board become concerned?

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Employment, Employee Participation & Mediation

The Cybersecurity Act has entered into force: Works Councils, play your part!

20 August 2026

Cyberattacks targeting hospitals, municipalities, critical infrastructure and other public service providers are no longer exceptional. Organisations therefore need to strengthen their resilience against digital threats. On 15 August 2026, the Cybersecurity Act (Cyberbeveiligingswet, Cbw) entered into force. With this Act, the Netherlands implements the European NIS2 Directive. The aim of the Cbw is to require organisations to take their digital resilience seriously and ensure that it is properly addressed. For management boards, this is primarily a compliance issue. However, a closer look at what these obligations mean in practice shows that the works council also has an important role to play.

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Employment, Employee Participation & Mediation

Changing a work-from-home policy? Don't forget the works council!

13 August 2026

ABN AMRO made headlines this week in the Financieele Dagblad. The bank wants employees to work from the office more frequently and is currently negotiating this with the trade unions. ABN AMRO is not alone in this – a broader trend is emerging across Dutch businesses. Since the COVID-19 pandemic, working from home has become the new normal. But the tide is turning. An increasing number of companies want employees to spend more time in the office again. Reasons cited include higher productivity, stronger connections with colleagues, greater creativity and a better work-life balance. This may sound logical. However, changing a work-from-home policy is more than simply a management decision.

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