[1] Since the retirement of Rosalie Abella on July 1, 2021, and of Michael Moldaver on September 1, 2022 (he took office the same day as Karakatsanis), she is the longest-serving member of the Supreme Court.
[4] After her call to the bar, Karakatsanis clerked for the judges of the Ontario Court of Appeal from 1982 to 1983, after which she entered private practice.
In 1987, Karakatsanis was appointed to the Liquor Licensing Board of Ontario as Vice-Chair, becoming Chair and CEO the following year.
She held that position until her 1995 appointment as Assistant Deputy Attorney General and Secretary of the Ontario Native Affairs Secretariat.
[4] Karakatsanis's judicial career began when she was appointed to the Ontario Superior Court of Justice in December 2002, where she developed an expertise in administrative law.