Allegations of bullying in parliament are set to be raised in the Commons.
An investigation by the BBC’s Newsnight uncovered complaints about a number of MPs, including Speaker John Bercow, allegations which he denies.
Green Party co-leader Caroline Lucas will ask an urgent question in parliament calling for staff to get the “best possible protection”.
The urgent question was granted to Ms Lucas by Mr Bercow as part of his job as speaker.
She will ask the Leader of the House, Andrea Leadsom, for a statement on the treatment of Commons staff – known as “clerks” – and is expected to call for them to be included in any new procedures to tackle harassment and bullying in Westminster.
Ms Lucas said: “People working in parliament should be able to work without fear of intimidation or bullying and today I’m calling for every member of staff to be given the best possible protection.”