Following her graduation, Stock briefly taught at the University of Lancaster and the University of East Anglia before joining the University of Sussex in 2003, where she worked as a reader and later a professor of philosophy. On 28 October 2021, the university announced Stock's resignation from the position following controversy around her views on gender identity; the announcement, written by the school's vice-chancellor, expressed regret that Stock did not "feel able to return to work" and that she had been subject to "bullying and harassment".
