He has been member of the Executive Board/Committees of a number of organisations, including Pakistan Institute of International Affairs and the Sindh Red Crescent Society, and a Trustee of the Shaheed Zulfiqar Ali Bhutto Sports Foundation.
[citation needed] Haider has, since early in his career, been an outspoken critic of the involvement of the Army in the political affairs of Pakistan.
[citation needed] Haider later joined the Pakistan Peoples Party (PPP), where he was appointed the Advisor to the Chief Minister Sindh from January 1989 to February 1990.
[citation needed] He has done work for victims of honour killing (e.g. Samia Sarwar), karo-kari, bonded labour, and missing persons, amongst others.
[citation needed] His recent activities included launching a strong campaign against the government and Inter-Services Intelligence (ISI) in relation to missing persons and formation of 'The Forum for Secular Pakistan' to counter the narrative of religious and sectarian hate and violence.