Kozka has exhibited in several group shows and award/prize shows, these include the national portrait prizes of both the Australia (2007+2009) and UK (2008), Albury Art Prize (highly commended), SCAP08 (commended) Scap09, Monash Gallery of Art Award (2008+2009) and the Hasseblad Masters Award 2008. Kozka's solo show include "Picturing Community: Ugunja, Kenya" (2002), "Auschwitz Revisited" (2005) and "The Best Years of Our Lives" (2009), Kozka has also been invited to exhibit a solo show at the Grand prix international de photographie de Vevey in September 2010, wining the Broncolor Award for lighting, running in the same month Kozka’s work is also to be shown at the Pingyao International Photo Festival in China at which he was honored with an award as an international participant. In 2011 Kozka’s work featured at Chobi Mela, the Bangladesh photo festival. Works will also travel to Korea in 2011 to the Hanmi Museum of Photography and to Vision Quest Gallery in Genoa, Italy.
In 2008 two series of Kozka’s work were published by teNeues in the Hassleblad Masters Book Vol.1, they were “Sunshine House” & “Passion”. In 2010 Kozka’s work was featured in the Australian publication (Book), Hijacked: Australian & German Photography.