Furthermore, he writes for the VPRO radio, columns for CJP magazine, opinion pieces for NRC Next and scenarios for film and theatre.

Lubach worked as a freelance textwriter for radio and television, including Vara Laat, Koppensnellers and De Wereld Draait Door.

In the summers of 2009, 2011 and 2013, Lubach performed together with comedian Tim Kamps at the itinerant festival De Parade with the show Het Monica da Silva Trio.

In 2003, Lubach got a late night programme as Arjen L at 3FM, at first for the NPS and later for the VARA, and he could be heard as the sidekick of Claudia de Breij and Giel Beelen.

From late 2007 on, he presented De Nieuwste Show for BNN from Monday till Thursday together with Patrick Lodiers.

Since September 2009, Lubach and Edo Schoonbeek co-produce the "Rap service" under the name "MC T-Lex" for the AVRO show Koefnoen.

For the NTR and IJswater Films, Lubach wrote the scenarios De Goudfazant ("The Golden Pheasant") and Midzomernacht ("Midsummer Night").

On 31 August 2012, he won the finale of the television show De Slimste Mens ("The Smartest Human") against Mark Huizinga and Jan Rot.

[6] From the 13th season of Wie is de Mol?, Lubach presents the programme MolTalk on Radio 1 and on the second screen, where he looks forward to and back on every episode of that day.

In 2013, Lubach and linguist Paulien Cornelisse started a monthly language segment on De Wereld Draait Door.

It is about a fan, Jelle, who disappointedly sings (in second person singular) about De Kast singer Syb van der Ploeg, blaming him for not replying to his messages.

In 2014 Kygo released a song named Firestone, which was written by Arjen Lubach and Martijn Konijnenburg, who worked on it together.

In 2015, Lubach secretly released the song "Justified (Sunrise Funk)" under the pseudonym Hartebees, which became a hit.

Radio host Domien Verschuuren discovered Lubach was the artist, because his name was listed as producer on Deezer.

The Amsterdam-based DJ duo released their Bass Country Club EP in 2015 with the Barong Family label, which was founded by Yellow Claw.

In the ZML episode of 1 November 2015, he was still making fun of vegetarians, saying they overdid it, but he did argue that the population as a whole should eat less meat, primarily for environmental reasons.

[16] During COVID-19 pandemic in the Netherlands, he has been supportive of the Dutch government's firm position against the proposed Eurobond, blaming the citizens of Southern European countries (more specifically in this case Italy) for electing anti-austerity politicians for decades.