[1] The following year, 1920, at a conference in June, the Ahdut HaAvoda decided to establish a military organisation, the Haganah, to replace the existing Hashomer militias.

[2] The same year, Ahdut HaAvoda and the non-Marxist Hapoel Hatzair cooperated to set up the "General Organization of Hebrew Workers"—the Histadrut.

[5] At the third Ahdut HaAvoda congress in 1924 at Ein Harod, Ben-Gurion defeated proposals put forward by Shlomo Kaplansky that a parliament be set up in Mandate Palestine.

The issue had arisen due to the British Colonial Office having presented plans for the setting up of a Legislative Council.

Cooperation between Ahdut HaAvoda and Hapoel Hatzair led them to merge in 1930 to form the "Party of the Workers of the Land of Israel"—Mapai, which was to become the dominant force in Zionist politics until the 1960s.

Those members of Mapam who remained, Yitzhak Rabin, Haim Bar-Lev and David Elazar, had to endure several years in staff or training post before resuming their careers.

[11] On 23 August 1954 Moshe Aram, Yisrael Bar-Yehuda, Yitzhak Ben-Aharon and Aharon Zisling broke away from Mapam to re-establish Ahdut HaAvoda – Poale Zion.

The new party also launched a newspaper, LaMerhav, which became a daily publication in December that year, and was published until merging into Davar in May 1971.

The 1955 elections were fought as Ahdut HaAvoda and the party won 10 seats, making them the fifth largest in the Knesset.