Porthole headshot image of Fragomen [Frankfurt][Director][MariusTollenaere]

Partner

Marius Tollenaere

Landscape hero image of Fragomen Frankfurt][Director][MariusTollenaere]
Porthole headshot image of Fragomen [Frankfurt][Director][MariusTollenaere]
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Partner

Marius Tollenaere

Country / Territory

  • GermanyGermany

Get in touch

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  • English
  • German

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[email protected]

T:+49 69 506 029480

F:+49 (0) 69 20 97 49 29

Fragomen in Frankfurt, Germany

Fragomen Global LLP

Neue Mainzer Str. 75

Frankfurt am Main 60311

Germany

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Get in touch

Languages

  • English
  • German

Contact information

Email

[email protected]

T:+49 69 506 029480

F:+49 (0) 69 20 97 49 29

Fragomen in Frankfurt, Germany

Fragomen Global LLP

Neue Mainzer Str. 75

Frankfurt am Main 60311

Germany

Connect via Linkedin

Get in touch

Languages

  • English
  • German

Contact information

Email

[email protected]

T:+49 69 506 029480

F:+49 (0) 69 20 97 49 29

Fragomen in Frankfurt, Germany

Fragomen Global LLP

Neue Mainzer Str. 75

Frankfurt am Main 60311

Germany

Connect via Linkedin
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Marius is an Attorney (Rechtsanwalt) focusing on German and European immigration and citizenship law. With extensive experience advising corporate clients across industries, Marius focuses on helping companies navigate complex immigration programs while ensuring compliance at every step. His clients range from SMEs, which largely support the German economy, to global corporations in sectors like finance, IT, banking and automotive, making him a trusted advisor on both local and cross-border immigration matters.

As a member of Fragomen’s Government Strategies Group, Marius leverages his deep knowledge to advise government bodies such as parliament, ministries and advisory panels. He also plays a key role in aligning corporate clients' voices with government strategies, bridging the gap between business needs and immigration policy.

Clients appreciate the careful and diligent approach that Marius has when developing tailored solutions to ensure German companies can compliantly recruit talent from abroad and also easily move their employees for business travel within the EU and non-EU countries in Europe. He’s particularly passionate about working with clients to address the skills gaps and in turn positively impact the German economy. His work extends beyond immigration law, as he guides businesses on global mobility programs while addressing related business challenges.

In addition to corporate immigration, Marius is also involved in humanitarian work, advising companies on how to integrate displaced talent into their workforce. His hands-on approach ensures that clients see him not just as skilled immigration practitioner, but as a trusted problem solver who delivers valuable insights into trends, legal developments and strategic solutions.

Marius’ commitment to making immigration accessible and understandable stems from his belief that while the field may seem complex, it plays a critical role in driving business success. His goal is to remove the fear and uncertainty around immigration law, empowering clients with the knowledge and solutions they need to thrive—and make a difference.

A trusted authority on German and EU immigration, Marius is a co-author of the standard immigration law textbook “Einwanderungsrecht” by C.H. Beck and of “Handbuch des Ausländerrechts” by Wolters Kluwer, and is frequently quoted in media outlets, providing commentary on current trends, policy changes and strategic developments.

Marius speaks English and German.

In addition to corporate immigration, Marius is also involved in humanitarian work, advising companies on how to integrate displaced talent into their workforce. His hands-on approach ensures that clients see him not just as skilled immigration practitioner, but as a trusted problem solver who delivers valuable insights into trends, legal developments and strategic solutions.

Marius’ commitment to making immigration accessible and understandable stems from his belief that while the field may seem complex, it plays a critical role in driving business success. His goal is to remove the fear and uncertainty around immigration law, empowering clients with the knowledge and solutions they need to thrive—and make a difference.

A trusted authority on German and EU immigration, Marius is a co-author of the standard immigration law textbook “Einwanderungsrecht” by C.H. Beck and of “Handbuch des Ausländerrechts” by Wolters Kluwer, and is frequently quoted in media outlets, providing commentary on current trends, policy changes and strategic developments.

Marius speaks English and German.

Education

  • Oberlandesgericht High Regional Court Frankfurt am Main, Second State Exam
  • University of Freiburg, First State Exam

More from Marius

Admissions

Bar Admissions: Rechtsanwaltskammer Frankfurt am Main

Professional accomplishments

Member, Deutscher Anwaltverein and subcommittee Arbeitsgemeinschaft Ausländer - und Asylrecht

Member, Netzwerk Migrationsrecht

Member, Deutsche Gesellschaft für Auswärtige Politik/German Council on Foreign Relations

Member, Executive Committee of the German Bar Association, Migration Law Working Group

Publications and lectures

Contributor, “Einwanderungsrecht.” 3rd Edition, 2025.

Speaker, “Fragomen Panel: Bye-Bye Borders (In German).” GBTA + VDR Europe Conference 2025, Hamburg, Germany, 12 November 2025.

Co-author, “Flucht und Arbeitsmigration: (noch) ein Dickicht in der Behördenlandschaft.” Human Resources Manager, 22 September 2025. 

Quoted, “Mehr Einwanderung dank ‘Super-Agentur’ – die heiklen Migrationspläne der Regierung.” Welt, 23 June 2025.

Speaker, “Using Labour Migration to Support Europe’s Green Transition.” Center for Global Development, Webinar, 23 June 2025.

Speaker, “New German Federal Government – Migration Law Changes on the Horizon: Insights from Our Frankfurt Partners.” Fragomen, Webinar, 18 June 2025.

Quoted, “Geschäfte mit der Einwanderung: Verband für Fachkräftegewinnung gegründet.” Tagesspiegel, 14 June 2025.

Speaker, “GermanyWelcomes – Skilled immigration, but how?” Creative Bureaucracy Festival 2025, Berlin, Germany, 5 June 2025.

Speaker, “Skilled labor recruitment sector - legal situation and stakeholders.” Hohenheim Days on Migration Law, Hohenheim, Germany, 3 May 2025.

Quoted, “Talente auf der Flucht: Autoritäre USA als Chance für Europas Wissensgesellschaft.” Markt und Mittelstand, 9 April 2025.

Speaker, “The One Take: German Elections.” Worldwide Employee Relocation Council (WERC), 24 March 2025.

Quoted, “Zölle und Migration: Der Trump-Schock trifft Berlin.” Berliner Zeitung, 19 March 2025.

Speaker, “Alternative Hiring Solutions: Connecting Businesses and Displaced Talent (EU Session).” Fragomen and Talent Beyond Boundaries, Webinar, 12 March 2025.

Moderator, "Fragomen Germany Global Mobility Forum.“ Fragomen, Frankfurt, Germany, 19 November 2024.

Quoted, “Der Arbeitsminister spricht von „Lahmarschigkeit“ – Wie die Ampel ihre Zuwanderungs-Ziele verfehlt.“ WELT, 4 November 2024.

Author, “Ordnungspolitik in der Arbeitsmigration.“ Zeitschrift für Ausländerrecht und Ausländerpolitik – ZAR, 44th Edition, Pages 309-310, September 2024.

Co-Author, “Handbuch des Ausländerrechts der Bundesrepublik Deutschland.“ 8 February 2024.

Co-Author, “Einwanderungsrecht.“ C.H. Beck Verlag, 27 April 2020.

Speaker, “Fachkräfteeinwanderung: Zu lange Verwaltungs­verfahren [Immigration of skilled workers: Too long administrative procedures].“ Deutscher Bundestag, 22 May 2023.

Author, “Regulierung wie im Mittelalter.” Published in Markt und Mittelstand, February, 2017.

Speaker, “System und aktuelle Entwicklungen des Arbeitsmigrationsrechts [System and current Trends in Labor Migration Law].” hosted by Forum Migrationsrecht, Martin Luther University Halle-Wittenberg, Halle, Germany, June 16, 2015.

Speaker "Das Deutsche Arbeitsmigrationsrecht [German Labor Migration Law].” hosted by Pro Bono Heidelberg - Studentische Rechtsberatung e.V., Heidelberg University, Heidelberg, Germany, June 12, 2015.

Author, “Konzernintern entsandte qualifizierte Fachkrafte aus Asien in Deutschland: Eine vernachlassigte Einwanderungskategorie mit großem Potenzial [Qualified Intra-corporate Transferees from Asia in Germany: A Neglected Immigration Category with Great Potential]." In Fachkräftemigration aus Asien nach Deutschland und Europa – Migration of skilled labour from Asia to Germany and Europe. Beiträge zu Migration und Integration, Band 5, edited by Axel Kreienbrink, 238 - 263. Nürnberg: Bundesamt für Migration und Flüchtlinge, 2014. Print.

Author, “German Immigration Law Changes.” In Yearbook 2014, edited by the American Chamber of Commerce Germany, 116-118. Frankfurt: ACC Verlag & Services, 2014. Print.

Speaker "Neue Entwicklungen im Bereich der Fachkräftezuwanderung [New Developments in Skilled Labor Migration]." Baden-Württembergische Rechtsberaterkonferenz, hosted by Evangelischer Oberkirchenrat, Karlsruhe, Germany, September 16, 2013 and January 13, 2014.

Speaker,"Konzernintern entsandte qualifizierte Fachkräfte aus Asien in Deutschland: Eine vernachlässigte Einwanderungskategorie mit großem Potential [Qualified Intra-corporate Transferees from Asia in Germany: A Neglected Immigration Category with Great Potential]." Lecture, Internationale Fachtagung Migration von Fachkräften aus Asien nach Deutschland und Europa hosted by the Federal Office for Migration and Refugees, Nürnberg, Germany, June 24, 2013.

Author, “German Visa Information.” In Yearbook 2013, edited by the American Chamber of Commerce Germany, 100-101. Frankfurt: ACC Verlag & Services, 2013. Print.

Co-author, “German Visa Information.” In Yearbook 2012, edited by the American Chamber of Commerce Germany, 102-103. Frankfurt: ACC Verlag & Services, 2011. Print.

Co-author, “16. DRK-Sommerkurs im Humanitären Völkerrecht, 01. - 07.08.2010, Berlin." Juristische Schulung (JuS), 12/2010: XVI – XVIII. Print.

Marius’s insights

February 26, 2026 | Meeting

Meeting Labour Skill Needs While Expanding Refugee ProtectionRead more

November 10, 2025 — November 12, 2025 | Meeting

GBTA + VDR Europe Conference 2025Read more

November 6, 2025 | Conference

Fragomen Frankfurt Global Mobility Forum 2025Read more
More related insights

Marius’s insights

February 26, 2026 | Meeting

Meeting Labour Skill Needs While Expanding Refugee ProtectionRead more

November 10, 2025 — November 12, 2025 | Meeting

GBTA + VDR Europe Conference 2025Read more

November 6, 2025 | Conference

Fragomen Frankfurt Global Mobility Forum 2025Read more
More related insights

Marius’s insights

February 26, 2026 | Meeting

Meeting Labour Skill Needs While Expanding Refugee ProtectionRead more

November 10, 2025 — November 12, 2025 | Meeting

GBTA + VDR Europe Conference 2025Read more

November 6, 2025 | Conference

Fragomen Frankfurt Global Mobility Forum 2025Read more
More related insights

Country / Territory

  • GermanyGermany

Get in touch

Languages

  • English
  • German

Contact information

Email

[email protected]

T:+49 69 506 029480

F:+49 (0) 69 20 97 49 29

Fragomen in Frankfurt, Germany

Fragomen Global LLP

Neue Mainzer Str. 75

Frankfurt am Main 60311

Germany

Connect via Linkedin

Marius’s insights

February 26, 2026 | Meeting

Meeting Labour Skill Needs While Expanding Refugee ProtectionRead more

November 10, 2025 — November 12, 2025 | Meeting

GBTA + VDR Europe Conference 2025Read more

November 6, 2025 | Conference

Fragomen Frankfurt Global Mobility Forum 2025Read more
More related insights

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Get in touch

Languages

  • English
  • German

Contact information

Email

[email protected]

T:+49 69 506 029480

F:+49 (0) 69 20 97 49 29

Fragomen in Frankfurt, Germany

Fragomen Global LLP

Neue Mainzer Str. 75

Frankfurt am Main 60311

Germany

Connect via Linkedin

Marius’s insights

February 26, 2026 | Meeting

Meeting Labour Skill Needs While Expanding Refugee ProtectionRead more

November 10, 2025 — November 12, 2025 | Meeting

GBTA + VDR Europe Conference 2025Read more

November 6, 2025 | Conference

Fragomen Frankfurt Global Mobility Forum 2025Read more
More related insights

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Get in touch

Languages

  • English
  • German

Contact information

Email

[email protected]

T:+49 69 506 029480

F:+49 (0) 69 20 97 49 29

Fragomen in Frankfurt, Germany

Fragomen Global LLP

Neue Mainzer Str. 75

Frankfurt am Main 60311

Germany

Connect via Linkedin

Marius’s insights

February 26, 2026 | Meeting

Meeting Labour Skill Needs While Expanding Refugee ProtectionRead more

November 10, 2025 — November 12, 2025 | Meeting

GBTA + VDR Europe Conference 2025Read more

November 6, 2025 | Conference

Fragomen Frankfurt Global Mobility Forum 2025Read more
More related insights

Share

  • Twitter
  • Facebook
  • LinkedIn

Share

  • Twitter
  • Facebook
  • LinkedIn

Explore more at Fragomen

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Learn more

Media mentions

Bloomberg: Trump’s Green-Card Crackdown Sparks Outcry From Confused Lawyers

Partner Bo Cooper discusses the practical considerations facing employers and foreign nationals amid recent changes to green card processing.

Learn more

Blog post

Business Immigration After the Midterms (Part 2): Enforcement, States and Expanding Risk

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Learn more

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Full-Time | #FragomenFC - Ep.18

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Learn more

Media mentions

The PIE: New UKVI compliance metrics for universities take effect today

Senior Manager Jonathan Hill examines how the UK's new RAG rating system and stricter compliance metrics could shape universities' approaches to international student recruitment and sponsorship compliance.

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Learn more

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Less Than Two Weeks: FIFA World Cup 2026 Countdown | #MobilityMinute

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Partner Ali Haider discussed how flexible residency pathways, strong infrastructure and access to healthcare are continuing to drive interest among retirees looking to relocate to the UAE.

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Blog post

Business Immigration After the Midterms (Part 1): What to Expect No Matter What

Partner K. Edward Raleigh analyzes how post‑midterm US business immigration will shift toward heightened enforcement, worker‑protection scrutiny and cross‑agency oversight, urging employers to align hiring practices, sponsorship decisions and documentation with consistent, defensible workforce strategies.

Learn more

Blog post

Beyond the UK's Net Migration Decline: What the Data Reveals

Government Affairs Strategy Director Shuyeb Muquit analyses the UK’s latest net migration decline, exploring what the data reveals about policy impact, economic trade‑offs and the risks of over‑correction in future migration strategy.

Learn more

Media mentions

Bloomberg: Trump’s Green-Card Crackdown Sparks Outcry From Confused Lawyers

Partner Bo Cooper discusses the practical considerations facing employers and foreign nationals amid recent changes to green card processing.

Learn more

Blog post

Business Immigration After the Midterms (Part 2): Enforcement, States and Expanding Risk

In this second installment of the Business Immigration After the Midterms series, Partner K. Edward Raleigh explores how post‑election enforcement risks for employers are expanding beyond federal agencies to include states, Congress, private plaintiffs and AI‑driven scrutiny, reshaping how workforce decisions are evaluated and challenged.

Learn more

Video

Full-Time | #FragomenFC - Ep.18

In this #FragomenFC episode, Partner Rick Lamanna, Senior Manager Sergio Flores and Senior Associate Jake Paul Minster discuss final travel and immigration considerations ahead of the 2026 FIFA World Cup.

Learn more

Media mentions

The New York Times: What Ireland and Germany Can Teach Us About Birthright Citizenship

Senior Manager Samantha Arnold discusses Ireland's citizenship framework and the gaps that can remain following reforms to birthright citizenship.

Learn more

Video

Sponsor Guide: Brazil Family Reunion Visa Essentials

In this video, Partner Diana Quintas discusses how Brazil’s family reunion visa supports long-term international assignments and outlines key eligibility, documentation and compliance considerations for employers and families relocating to Brazil.

Learn more

Blog post

Immigration and Employment in Chile: Legal Requirements for Foreign Workers

Attorney María José Clarke explores Chile’s intensified immigration enforcement framework under President José Antonio Kast, examining new employer compliance obligations, work authorization rules for foreign nationals and the legal and financial consequences of unauthorized employment.

Learn more

Media mentions

The PIE: New UKVI compliance metrics for universities take effect today

Senior Manager Jonathan Hill examines how the UK's new RAG rating system and stricter compliance metrics could shape universities' approaches to international student recruitment and sponsorship compliance.

Learn more

Blog post

EU Inc. Signals a Shift: Why Immigration Will Matter to Europe’s New Corporate Agenda 

Knowledge Management Director Ana Sofia Walsh and Senior Client Engagement Manager Soraya Driessen examine the European Commission’s EU Inc. proposal and its potential to reshape corporate structures across the EU, highlighting the resulting complexities and unresolved questions for immigration, work authorization and cross-border workforce mobility.

Learn more

Video

Less Than Two Weeks: FIFA World Cup 2026 Countdown | #MobilityMinute

With less than two weeks until the first match of the 2026 FIFA World Cup, Senior Associate Jake Paul Minster outlines important visa and entry considerations for travelers planning to visit the US, Canada and Mexico.

Learn more

Media mentions

The National: Companionship Scheme Addresses Loneliness Among Elderly as UAE Population Ages

Partner Ali Haider discussed how flexible residency pathways, strong infrastructure and access to healthcare are continuing to drive interest among retirees looking to relocate to the UAE.

Learn more

Blog post

Business Immigration After the Midterms (Part 1): What to Expect No Matter What

Partner K. Edward Raleigh analyzes how post‑midterm US business immigration will shift toward heightened enforcement, worker‑protection scrutiny and cross‑agency oversight, urging employers to align hiring practices, sponsorship decisions and documentation with consistent, defensible workforce strategies.

Learn more
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Important Updates
Important Updates
June 3, 2026 | United KingdomUnited Kingdom: Migration Advisory Committee Review of Sponsored Work Route Salary Thresholds Published
June 3, 2026 | United StatesBloomberg: Trump’s Green-Card Crackdown Sparks Outcry From Confused Lawyers
June 3, 2026 | CanadaCanada: Ontario Advances Overhaul of Provincial Nominee Program
June 3, 2026 | 🌐Middle East - The Latest News on Mobility and Travel Considerations
June 3, 2026 | IrelandThe New York Times: What Ireland and Germany Can Teach Us About Birthright Citizenship
June 3, 2026 | United KingdomUnited Kingdom: Migration Advisory Committee Review of Sponsored Work Route Salary Thresholds Published
June 3, 2026 | United StatesBloomberg: Trump’s Green-Card Crackdown Sparks Outcry From Confused Lawyers
June 3, 2026 | CanadaCanada: Ontario Advances Overhaul of Provincial Nominee Program
June 3, 2026 | 🌐Middle East - The Latest News on Mobility and Travel Considerations
June 3, 2026 | IrelandThe New York Times: What Ireland and Germany Can Teach Us About Birthright Citizenship
June 3, 2026 | United KingdomUnited Kingdom: Migration Advisory Committee Review of Sponsored Work Route Salary Thresholds Published
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