He is also an advocate of the High Court of Tanzania and the High Court of Zanzibar. His main area of practice is public interest litigation. Wilbert B.Kapinga till 1997 he was a Dr of Law at the University of Dar es Salaam and Senior Lecturer at the Faculty of Law and Head of Faculty of Law University of Dar es Salaam. Dr Kapinga has written extensively in the areas of Labour law, land laws, human rights and public policies.
Wilbert B. Kapinga hadi mwaka 1997 alikuwa ni Mhadhiri Mwandamizi wa Sheria na Mkuu wa Kitivo cha Sheria, Chuo Kikuu cha Dar es Salaam. Amechapisha makala mbalimbali juu ya sheria za kazi, sheria za ardhi, haki za binadamu, elimu ya sheria na taaluma ya sheria na sera za Umma. Dk. Kapinga pia ni Mkurugenzi mwanzilishi wa HAKIARDHI. Yeye ni Wakili wa Mahakama Kuu ya Tanzania.