Paul Casaer is active as a sculptor. Domestically, his work has been shown at M HKA, De Singel, Middelheimmuseum and Fotomuseum in Antwerp, Museum M Leuven, MuZee Ostend, De Garage Mechelen, Netwerk Aalst and Z33 Hasselt, among others. Internationally, he exhibited at Galerie Hanfweihnacht Frankfurt, Centro Universitario, Mariantonia São Paulo, Tafa Gallery Tianjin and City Gallery Prague, among others. His work is part of the Flemish Community Collection and is included in the collections of M HKA, Middelheim Museum and M Leuven.