He was appointed the Minister of Culture and Information in 1967 by President Abdul Rahman Arif.

As a result, al-Hassan practiced private law until the end of the Ba'athist rule over Iraq in 2003.

He was appointed to a task force looking at compensation for the victims of the Saddam Hussein government.

[6] Later that year, he threatened to resign unless a judge who had indicted Ahmad Chalabi for murder and money laundering was fired.

[7] He had initially called for the Iraqi legislative election of January 2005 to be postponed as it could "...trigger civil war".