Firm Profile > CDZ Chajec, Don-Siemion & Partners > Warsaw, Poland

CDZ Chajec, Don-Siemion & Partners
00-687 WARSAW

Poland > Employment Tier 2

Led by Ewa Don-Siemion and Piotr Kryczek, the employment team at CDZ Chajec, Don-Siemion & Partners assists clients with all aspects of individual and collective relations. In particular, it provides both strategic and routine advice on matters including TUPE transfers, M&A transactions, cost optimisation and working time issues. The group also has expertise in outsourcing, group layoffs and the legal complexities of foreign secondments. A noted member of INTERLAW, the team handles multi-jurisdictional transactions for shared service centres in CEE and regularly supports international companies entering the Polish market.

Practice head(s):

Ewa Don-Siemion; Piotr Kryczek,

Key clients


Alexander Mann Solutions

Computacenter Poland

Schibsted Tech Polska B.V.

Grid Dynamics

OCADO Technology


Poland > Real estate Tier 3

Patryk Galicki and Piotr Zapalski lead the real estate team at CDZ Chajec, Don-Siemion & Partners. The group regularly handles transactions involving developed land, buildings (office, retail and hotel schemes) and is expert in Polish administrative law as it relates to permits. Notably, the firm recently advised an international fund on the acquisition of post-industrial property in Warsaw (a matter featuring active restitution claims filed by both heirs and the City of Warsaw).

Practice head(s):

Patryk Galicki; Piotr Zapalski

Key clients

Echo Investment

TASC Infrastructure Ltd.


Griffin Real estate


Agencja Kapitałowo-Rozliczeniowa

Centerscape Investments

Centerscape Properties

Poland > Restructuring and insolvency Tier 3

At CDZ Chajec, Don-Siemion & Partners, the insolvency team is led by Krzysztof Żyto and is well versed in pre-bankruptcy and bankruptcy proceedings. Restructuring is led by Maciej Kotlicki and involves company reorganisations and distressed asset transactions.

Poland > Commercial, corporate and M&A Tier 4

At CDZ Chajec, Don-Siemion & Partners, the team has a specialism in public and private M&A arising from the TMT and real estate sectors. Leading the M&A group is telecoms law expert Andrzej ChajecMacej Kotlicki, private equity expert Szymon Skiendzielewski, and corporate and commercial all-rounder Jolanta Okoniecka.

Practice head(s):

Andrzej Chajec; Jolanta Okoniecka; Maciej Kotlicki; Szymon Skiendzielewski

Other key lawyers:

Eliza Szulc-Sieranska

Key clients

IT Kontrakt

TFI Capital Partners

Cordia International (Polnord)

Poland > Dispute resolution Tier 5

CDZ Chajec, Don-Siemion & Partners' team is highly experienced in construction-related disputes, representing investors in disputes with general contractors, as well as the contractors themselves. The group regularly provides day-to-day disputes services for the bankruptcy trustees of entrepreneurs, and individuals pursuing claims against banks concerning Swiss-franc denominated mortgages. Aleksandra Hulewicz heads the team, specialising in court and administrative proceedings. Marcin Lizurek focuses on construction disputes, with expertise in FIDIC contracts.

Practice head(s):

Aleksandra Hulewicz

Other key lawyers:

Piotr Kryczek; Marcin Lizurek


‘Chajec, Don-Siemion & Zyto Legal Advisors is very responsive to any queries a client may have and proactively provides creative solutions for the clients’ specific issue.’

We offer more than just legal advice: In the end, it’s all about QUALITY. About commitment to legal excellence, outstanding client service, and ability to develop forward-thinking legal solutions.

We always apply legal expertise in the context of your business needs and issues.

Our approach is practical, solution-based and innovative. We don’t waste your time or money on legal theories.

We work alongside your company, help you grow, manage and optimize your business, implement new technologies, forge new partnerships, resolve conflicts and meet your obligations.

We have offices in Warsaw, Krakow and Lodz.

What We Do: Our expertise covers transactional, corporate, litigation and regulatory issues. We handle complex situations by deploying multi-skilled teams.

As a member of Interlaw, the International Association of Independent Law Firms, we advise on cross-border matters by working in integrated teams from almost 100 jurisdictions. We guide clients through the local legal and business environment.

We support leading organizations representing the shared services sector in Poland.

Our work is internationally recognized: We have nine standout practices ranked by The Legal 500 EMEA, Chambers Europe and IFLR1000. In 2021 we have been recommended in the field of corporate, commercial and M&A, banking and finance, capital markets, dispute resolution, employment, private equity, real estate, restructuring and Insolvency. Our lawyers are recommended as leaders in their respective practice areas.

Areas of practice: We are a full service law firm with a strong transactional record, well-known for telecoms expertise, active in the media and technology sectors, and known for private equity transactions.

We have solid experience with the business services sector where we offer complex employment and HR solutions. We have advice on opening shared services centres in Poland.

Real estate is one of the core areas of our activity. We represent Polish and foreign entities, such as investment funds, developers and investors. We provide advice on all types of real estate transactions, including project finance.

We advise on corporate and commercial issues, mergers and acquisitions (also including transactions between public companies), IPOs and other capital markets transactions.

Department Name Email Telephone
Private Equity Andrzej Chajec
Corporate and Commercial Law Jolanta Okoniecka
Employment and Labour Law Ewa Don-Siemion
Legal Process Outsourcing Ewa Don-Siemion
Data Protection Piotr Kryczek
Real Estate and Construction Patryk Galicki
Project Finance Szymon Skiendzielewski
Capital Markets Maciej Kotlicki
Real Estate and Construction Piotr Zapalski
M&A Andrzej Chajec
Competition Law Piotr Kryczek
Intellectual Property Piotr Kryczek
Securities and Venture Capital Investments Maciej Kotlicki
Photo Name Position Profile
 Krzysztof Żyto  photo Krzysztof Żyto Krzysztof specializes in dispute resolution, restructuring and insolvency law. His practice is…
 Andrzej Chajec  photo Andrzej Chajec Andrzej has over 20 years’ experience in transactional work, principally in venture…
 Ewa Don-Siemion  photo Ewa Don-Siemion Ewa specializes in advising international clients on employment law with a particular…
 Patryk Galicki  photo Patryk Galicki Patryk has over 17 years’ experience in real estate law and mergers…
 Maciej Kotlicki  photo Maciej Kotlicki Maciej specializes in mergers and acquisitions, and capital markets transactions. He advises…
 Piotr Kryczek  photo Piotr Kryczek Piotr specializes in competition law, employment, intellectual and industrial property law, with…
 Jolanta Okoniecka  photo Jolanta Okoniecka Jolanta has over 20 years’ experience in corporate work, M&A and commercial…
 Szymon Skiendzielewski  photo Szymon Skiendzielewski Szymon advises private equity and investment funds, Polish and international companies as…
 Piotr Zapalski  photo Piotr Zapalski Piotr has over 16 years’ experience in real estate law. He advises…