In Slovak Center of the PEN International:
  Member since 1993
  Secretary (1995-97)
  Chair of WiPC (1993-2004)
  President (2000-2004)
  Chair of Translation & Linguistic Rights Committee, 2006

In the PEN International:
  Member of Searching Committee (2000 - 2002)

As a chair of Writers in Prison Committee of Slovak Centre of PEN International contributed to release from prison of  writers from Vietnam (Prof. Doan Viet Hoat, Dr. Nguyen Dan Que, Nguyen Van Thuan, Nguyen Xuan Tu, Pham Duc Kham), Syria (Nizar Nayyuf and Khalil Buyarez), China (Li Xiaohua and Wei Jingsheng), Cuba (Pablo Reyes Martinez) and Turkey (Eşber Yagmurdereli) + main organizer of public Christmas 2001 campaign "Spark of the hope" collecting signs from Slovak citizens for release from prison of SC PEN honorary members from Vietnam.

* Reporteur of PEN membership of young writers (Regional PEN conference, Latvija, 1998).
* Chair of round-table Young PEN (PEN congress, Macedonia, 2002).
* Main organizer of UNESCO/PEN conference "Young PEN for the equalization of the creative environment throughout Europe" (European PEN conference, Budmerice, 2003).

Organizer of global, international and regional PEN activities:
Establisher of  Global PEN Library (2001): till today up to 3000 books from 53 countries  with visits of 48 PEN guests from Austria, Belgium, Bulgaria, Czech Republic, Finland, Germany, Hungary, Japan, The Netherlands, Norway, Poland, Serbia, Slovenia, Lithuania, Sweden, Switzerland and USA. Donation of books were coordinated with following PEN Centres: American, Austrian, Bulgarian, Czech, Cypriot, Finnish, Hungarian, Japanese, Macedonian, Palestinian, Polish, Portugal, Romanian, Scottish, Slovenian, Swedish, Swiss-Italian and Reto-Romansh, Swiss-German and Vietnam PEN Centre in exile.

* Main organizer of Second conference of young writers of Central and Eastern Europe
   (Budmerice, 1994).
* Main organizer of Visegrad literary forum (Budmerice; 2002, 2003).
* Main organizer of UNESCO/PEN conference "Young PEN for the equalization of the creative  environment throughout Europe" (Budmerice, 2003).
* Main organizer of Global PEN Library round-tables "Writer and power" + "Library as the last stronghold of literature?" (Bratislava/Budmerice, 2004).

Editor of almanac of young PEN authors of Central and East Europe "Central Europe - Now!", 1995 (Copies available abroad: Cambridge University, Library of Congress, New York Public Library, University of Oklahoma etc.).

Editor of book "Global PEN Library" (2004).

Active participation at PEN congresses and conferences
1993: Ohrid (Macedonia)
1994: Budmerice (Slovakia)
1995: Prague (Congress, Czech Republic)
1996: Elsinor (Denmark/WiPC), Bled (Slovenia), Minsk (Belarus/WiPC), Guadalajara
          (Congress, Mexico)
1997: Edinburgh (Congress, Scotland)
1998: Riga (Congress, Latvija), Chichester (England/WiPC), Nicosia (Cyprus)
1999: Warszawa (Congress, Poland)
2000: Kathmandu (Nepal/WiPC), Moscow (Congress, Russia), Sarajevo (Bosnia and
          Herzegovina)
2001: London (Congress, England)
2002: Ohrid (Congress, Macedonia), Bratislava/Budmerice (Slovakia)
2003: Yerevan  (Armenia), Budmerice + Bratislava/Budmerice (Slovakia), Mexico 
          City (Congress, Mexico)
2004: Prague (Czech Republic), Nicosia (Cyprus), Bratislava/Budmerice (Slovakia), Tállya
          (Hungary), Tromső (Congress, Norway), Paris-Bruxelles (France)
2005: Litoměřice (Czech Republic)
2006: Bled (Slovenia), Beograd (Serbia), Ljubljana (Slovenia)...