Tsemel represented activist Ezra Nawi. An Israeli settler claimed Nawi hindered the settler from filming Nawi's assistance of Palestinians, and Nawi was convicted and fined. On appeal, Tsemel successfully argued that the area the Palestinians were farming did not belong to the settler. Nawi's conviction was overturned.
Tsemel represented student Salah Hamouri after he was indicted on two counts: for planning to assassinate rabbi Ovadia Yosef and for being a member of the Popular Front for the Liberation of Palestine. She advised Hamouri to plead guilty to the latter in exchange for a lighter sentence.
Tsemel criticized Camp 1391, an Israel Defense Forces prison camp for "high-risk" prisoners in northern Israel, stating, "anyone entering the prison can be made to disappear, potentially forever, it's no different from the jails run by tinpot South American dictators." Tsemel was a participant in the Russell Tribunal on Palestine.
Tsemel, together with Palestinian lawyer Raji Sourani, received the 1996 "Liberty, Equality, Fraternity" award, the highest human rights award granted by the government of France. Tsemel, together with Palestinian advocate Mohammad Na'amneh, received the 2004 Hans Litten prize from the European Association of Lawyers for Democracy and World Human Rights.
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- American Friends Service Committee (March 30, 2010). Leah Tsemel Retrieved on February 2, 2014.
- Hajjar, Lisa (2005). Courting conflict: The Israeli military court system in the West Bank and Gaza, pp. 168-69. University of California Press, Berkeley. ISBN 0520241932
- Salokar, Rebecca Mae and Volcansek, Mary L. (1996). Women in law: A bio-bibliographical sourcebook, pp. 313-20. Greenwood Press, Westport. ISBN 9781567509144
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- Ben-Ami, Nina (December 23, 2008). Affaire Salah Hamouri: la réponse de l'ambassade d'Israël, Le Nouvel Observateur. Retrieved on February 2, 2014.
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- BBC News (December 2, 2003). Israel court lifts prison secrecy BBC News Retrieved on February 2, 2014
- Cook, Jonathan. Facility 1391: Israel's Guantanamo, Le Monde diplomatique (November 2003), reprinted Archived 2006-08-06 at the Wayback Machine. in CounterPunch (12 November 2003) Retrieved on February 2, 2014.
- Russell Tribunal on Palestine (November 2011). Lea Tsemel Retrieved on February 2, 2014.
- Commission nationale consultative des droits de l'homme, Prix des droits de l'homme Retrieved on February 2, 2014.
- Palestinian Centre for Human Rights (December 7, 1996). Palestinian centre for human rights wins France’s highest award for human rights endeavours. Retrieved on February 2, 2014.
- European Association of Lawyers for Democracy and World Human Rights (February 5, 2005). German Lawyers Association awards HANS-LITTEN-PRICE to Lea Tsemel and Mohammad Na'amneh Retrieved on February 2, 2014.