He was elevated to the Lahore High Court as a judge in 2009 after the Lawyers' Movement and remained as an associate partner in the oldest law firm in Pakistan, Cornelius, Lane & Mufti. He served as Chief Justice of the Lahore High Court.[5]
On 23 October 2023, a 5 member bench of the Supreme Court led by Justice Ijazul Ahsan, declared the trial of ordinary civilians in special military courts as ultra vires the Constitution.[7]
Shooting incident
On 15 April 2018, unknown gunmen opened fire at Ahsan's residence in Model Town, Lahore in two separate incidents, occurring only hours apart from each other. No casualties were reported.[8]
^"IJAZUL AHSAN". www.bolnews.com. 1 September 2022. Justice Ijaz-ul-Ahsan received his early education in Lahore. He got admission to Forman Christian College, Lahore in 1975 from where he graduated in 1979 with a scholarship He joined the Punjab University Law College, Lahore where he completed his LLB and won a gold medal for academic excellence. After graduating, he started a law practice and completed his civil and criminal law apprenticeship. He went to the United States for further studies and graduated with a Masters's in Law (LL.M) from Cornell University, New York in 1987. He was awarded the prestigious Chevening scholarship to study commercial law in the United Kingdom. He also received a fellowship from the South Western Institute for International Studies in Dallas, Texas.
^"Gunmen open fire at Justice Ijazul Ahsan's Lahore residence in two separate incidents". www.dawn.com. 15 April 2018. Unknown gunmen opened fire at the residence of Justice Ijazul Ahsan in Lahore's Model Town in two separate incidents only hours apart, DawnNewsTV reported on Sunday. No casualties were reported in the attacks, one of which took place around 10:45pm on Saturday and the other at 9:10am on Sunday.