Halabi is a founding member of Mada al-Carmel — Arab Center for Applied Social Research in 2000.
He has collaborated with Adalah – The Legal Center for Arab Minority Rights in Israel.
[1] He is also a member of Badil- Resource Center for Palestinian Residency and Refugee Rights[2] He was a member of the board of B'Tselem – The Israeli Information Center in the Occupied Territories.
His published work deals with the legal jurisdictional status of Jerusalem, Israeli practice in the West Bank and Gaza, and the status and rights of the Arab minority in Israel.
His publications include "Limits of a Place in Human Existence: Two Dimensions, Geography and Demography in Israel's East Jerusalem Policy Between 1967–2000" (Jerusalem 2001) and "Israel’s Land Laws as a Political Tool" [6]