Janet became a Civil Service Commissioner on 1 January 2006, when she was also appointed the Commissioner for Public Appointments. In the latter capacity, she regulates ministerial appointments to designated public bodies in England and Wales and certain posts in Northern Ireland.
She took up the appointments on stepping down as Senior Partner of Simmons & Simmons, a City-based international law firm. Previously, she was a member of the Employment Tribunals Service Steering Board, Chair of the Employment Tribunal System Taskforce and a member of the Council of ACAS.