Transline, the employment agency used by Sports Direct to supply workers for its scandal-hit warehouse in Shirebrook, will appear before a parliamentary committee for a second time.
Financial director Jennifer Hardy has been asked to appear before the business, energy and industrial strategy (BEIS) committee to discuss the use of agency workers by UK companies, The Times reports.
Hardy gave evidence to the inquiry into working practices at Sports Direct last year.
She will appear at the BEIS committee hearing alongside Unite assistant general secretary Steve Turner, GMB general secretary Tim Roache and Resolution Foundation senior research and policy analyst Lindsay Judge.
Unite is expected to give an update on the conditions at Shirebrook.