Eric M. Runesson became a member of the Swedish Bar Association in 1993. He became a lawyer and partner in Sandart & Partners Law Office in 1996. Runesson became a Doctor of Law at the Stockholm School of Economics in 1996,[3] writing his thesis on the Reconstruction of incomplete contracts. He became a lecturer in 2000.
Runesson was appointed on 14 June 2018 as Justice of the Supreme Court of Sweden, effective 3 September 2018.[4]
On 4 October 2018 Eric Runesson was elected to the Swedish Academy.[5] He formally entered the Academy on 20 December 2018 and succeeded Lotta Lotass on chair 1.[6]