[2] Having risen to the rank of lieutenant colonel, he retired from the police to engage in political and social activities.

From 2014 to 2019 he was First Deputy Chairman of the Liberal Democratic Party of Belarus, which was headed by his father Sergei Gaidukevich.

[8] In February 2021, he initiated the passage of a foreign agents law, which critics see as a potential means for President Lukashenko to put pressure on Western human rights activists and dissidents.

[9][10] Gaidukevich has repeatedly spoken in the media in defense of Lukashenko and the official state structure of the Belarus and in criticism of the opposition.

According to the EU decision, Gaidukevich "made public statements welcoming the redirection of Ryanair passenger flight 4978 to Minsk on 23 May 2021.

In addition, the United Kingdom, Canada, and Switzerland included Gaidukevich in their sanctions lists.

On 6 July 2021, Albania, Iceland, Liechtenstein, Norway, North Macedonia, and Montenegro joined the June package of EU sanctions.

On 9 August 2021, Oleg Gaidukevich was also added to the US Specially Designated Nationals and Blocked Persons List.

[23] His wife is Maria Valentinovna Gaidukevich, daughter of Valentin Mikhailovich Shukhno, former chairman of the State Securities Committee of the Republic of Belarus.