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

Reorganising Despite Negative Works Council Advice: How Far Does Management Discretion Extend?

24 July 2026

A management board decides to implement a reorganisation, despite the works council (OR) having issued a negative opinion. The management board nevertheless intends to proceed with the decision. How far does its discretion to organise the company extend? A recent decision by the Enterprise Chamber of the Amsterdam Court of Appeal (OK) shows that this discretion is broad, provided that the management board follows the employee participation process carefully and provides a sound justification for its decision.

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Employment, Employee Participation & Mediation

The Act Implementing the Revised EU Directive on European Works Councils: What Will Change for the European Works Councils of Multinational Companies?

13 July 2026

Multinational companies with a European Works Council (EWC) are facing significant changes. On 26 November 2025, Directive (EU) 2025/2450—the revised European Works Council Directive—was adopted. EU Member States must transpose the Directive into their national legislation by 1 January 2028. In the Netherlands, this will be achieved through the Act Implementing the Revised EU Directive on European Works Councils, which amends the Dutch European Works Councils Act (Wet op de Europese ondernemingsraden (WEOR)) and introduces a limited amendment to the Economic Offences Act (Wet op de economische delicten (WED)). Below, we outline the key changes introduced by the proposed legislation.

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Employment, Employee Participation & Mediation

The More Security for Flexible Workers Act Has Been Adopted: What Will Change for Employers?

9 July 2026

On 7 July 2026, the Dutch Senate approved the More Security for Flexible Workers Act (Wet meer zekerheid flexwerkers). The new legislation is intended to provide employees with flexible employment contracts with greater certainty regarding their work, income, and working hours. The Act addresses four key areas: on-call contracts, fixed-term employment contracts, temporary agency work phases, and the employment conditions of temporary agency workers.

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