Anton was a lawyer practicing within the Minsk City Bar. On July 14, 2021
, the Qualification Commission of the Ministry of Justice considered materials on the termination of his lawyer's license. The reason allegedly lay in systematic violations of the Law "On Advocacy and Advocate Activity" and the Rules of Professional Ethics of an Attorney.
Maslov, Gashinsky & Partners law firm actively provided legal assistance to clients in many high-profile politically motivated cases.
Anton Gashinsky defended political scientist Vitaly Shkliarov, journalist Andrei Alexandrov, IT specialists of the PandaDoc company, Uladzimir Niaronski (the author of the YouTube channel "Slutsk for Living"), Egor Dudnikov, Olga Filatchenkova (a BSUIR lecturer) accused in the "Student case
". Recently, Anton Gashinsky also represented the interests of Sofia Sapieha, who was detained along with Roman Protasevich.