After specializing in painting at the Royal Danish Academy of Fine Arts, she was trained as a sculptor by her husband Siegfried.
As a result of Siegfried's employment at Bing & Grøndahl under Jens Ferdinand Willumsen, they were both influenced by his distinctive style.
[2] The couple's ideals stemmed from the international youth movement, Olga Wagner reflecting her mother's homeland, Austria.
Under the influence of evolving trends from abroad, she used a variety of materials including stone, wood and bronze to produce larger works in relation to architecture and nature.
[6] In 2006, Vejen Art Museum exhibited works by Olga and Siegfried Wagner, including sculptures, furniture, ceramics, silver and artefacts in wood.