Ms Hartogs was for several years a deputy judge of the Rotterdam District Court. From 1990 to 1994 she worked as Company Secretary / Public Relations Manager for Nedlloyd Road Cargo International, a division of Nedlloyd Holding in Rotterdam. She was Manager of Internal Affairs at Joh. Enschedé Security Print in Haarlem from 1994 to 2000, and from 2000 to 2001 she was Company Secretary of Boer & Croon Strategy and Management Group B.V. in Amsterdam.
In 2002 she was appointed Registrar of the Supreme Court of the Netherlands. She retired in 2011.
Ms Hartogs’ current activities include membership of a Supervisory Committee of the Netherlands Bar Association, of a local leadership body of the political party D66, and of the board of the Friends of the Residentie Bach Ensembles.