On the first sitting day of 2020, Duluk expressed regret for several alleged instances of inappropriate behaviour at a parliamentary Christmas party in December 2019.
The Speaker, Vincent Tarzia, commissioned a private investigator to produce a report into Duluk's conduct, which allegedly included slapping SA Best MLC Connie Bonaros on the backside and making racist and homophobic comments to other MPs.
[9] On 25 August 2021 the court found him not guilty of assault, but magistrate John Wells said he "behaved like a drunken pest" and his behaviour was "entitled, uncouth and disrespectful".
"[10] On 8 September 2021 new allegations were raised against Duluk relating to his behaviour at the 2019 Christmas party by Greens MLC Tammy Franks in an address to the legislative assembly.
Chief among these were allegations that Duluk had made sexual remarks about numerous women present, as well as homophobic comments directed at a male parliamentary staff member.