Quader is the chairman of the
Jatiya Party (JP). Additionally, he held important posts in important ministries and organizations including the Ministry of Establishment,
Bangladesh Petroleum Corporation,
Jamuna Oil Company and
Bangladesh Tobacco Company (now British American Tobacco Bangladesh). He worked in the Ministry of Agriculture in Iraq as a mechanical engineer from 1976 to 1977. Quader was elected to parliament with a Jatiya Party ticket in the seventh parliamentary election and served as member of parliamentary standing committee on defence ministry. He was also elected as lawmaker in eighth parliamentary election and served as a member of standing committee on agriculture ministry. Quader was elected to parliament from Lalmonirhat-3 on 7 January 2019 as a candidate of the Jatiya Party. He received 149,641 votes while his nearest rival,
Asadul Habib Dulu of
Bangladesh Nationalist Party, received 80,225 votes. From 2016, he joined his elder brother,
Hussain Muhammad Ershad, who was the founder and chairman of the Jatiya Party. Ershad had declared to make Quader the co-chairman of the party although Ershad's wife
Rowshan Ershad and her MPs were against the decision. In May 2019, Ershad appointed Quader acting chairman of Jatiya Party. In July 2019, he became chairman of the party. His leadership has been challenged by
Bidisha Ershad, wife of Ershad, and Rowshan Ershad, another wife of Ershad and co-chairperson of the party. In light of the 12th National Elections, his political decisions are being subject to staunch criticisms by Saquib Rahman, Editor of Progress Magazine and Senior Lecturer of Law at North South University. After the fall of the Sheikh Hasina led Awami League government, Quader's bank accounts were frozen by the Muhammad Yunus led Interim government. Metropolitan Magistrate Masum Miah ordered the
Police Bureau of Investigation to investigate him and
Mujibul Haque Chunnu for trading party nominations. In May 2025, his home in Rangpur was attacked and looted by activists of the
National Citizen Party and
Anti-Discrimination Student Movement. Despite both sides attempting to file complaints, police have not officially registered cases against anyone. Bangladesh Army interrogated leaders of the Bangladesh Nationalist Party and Students Against Discrimination. The attack on GM Quader's residence was termed "undesirable and unfortunate" by the Anti-Discrimination Student Movement and BNP, who also expressed regret over the involvement of two of their activists. The army met with both groups' leaders to identify those responsible and urged them to prevent such incidents in the future. ==References==