He started his legal practice as an advocate of the Lahore High Court in 1975 and was a partner at Cornelius, Lane and Mufti, one of the largest law firms in Pakistan.[4] In 1999, he became a judge of the Lahore High Court but resigned in 2007 in response to the maltreatment of Chief Justice Iftikhar Muhammad Chaudhry on 9 March.[5] He joined the Law and Policy Department of the Lahore University of Management Sciences in August 2007 and served as the head of the department from October 2007 to May 2009 when he joined the Supreme Court of Pakistan.[4]
Important court decisions
Justice Khawaja was on the bench which decided the Sindh High Court Bar Association case, in which the Court declared the state of emergency imposed by President General Pervez Musharraf on 3 November 2007 to be unconstitutional and restored most of the judges who were forced to vacate office that day.[6] He wrote a concurrent opinion in the case declaring the National Reconciliation Ordinance to be void ab initio,[7] and the leading opinion in the suo motu case ordering wholesale giant Makro-Habib to restore a playground in Jamshed Town on which it had established an outlet.[8]
Justice Khawaja was one of those six judges who gave a dissenting judgement against the military courts in Pakistan, that decision came just few days before his beginning of term as CJP.[9]
Just before finishing his term as CJP, he headed a bench which issued a landmark decision directing Government of Pakistan to adopt Urdu as an official language according to 1973 Constitution. The decision was read out in Urdu by the CJP.[10]
Post-retirement
After retiring as Chief Justice, he went back to LUMS as a scholar-in-residence.[3][11]
Khawaja has been married to his first cousin, Bina Jawwad since 1973. The two share four children together; three daughters (Ismet, Zainub and Saleema) and a son, Haider. He lives with his wife and children at their farmhouse in Bedian Road, Lahore, having founded a school over there called “Harsukh”, which houses the local young and underprivileged children living nearby. He also owns a residence in Islamabad.
Khawaja’s brother, Hasan Muttaqi Khawaja (1946-2019), was married to the daughter of newspaper magnate and founder of the Jang Group, Mir Khalil-ur-Rehman, until his death in February 2019.[12]
^Sindh High Court Bar Association through its Secretary v. Federation of Pakistan through Secretary, Ministry of Law and Justice, Islamabad and Others[2009] PKSC 8 (31 July 2009), Supreme Court (Pakistan)
^Mobashir Hassan and Others v. Federation of Pakistan, etc.[2009] PKSC 13 (16 December 2009), Supreme Court (Pakistan)