Development of information systems and IT are continuously ongoing in almost every company and organisation. More and more IT development is performed in organisations characterised by professional work. Two studies are performed to point out two types of professions. One study is carried out at an airbase within the Swedish Air Force and one study is done in a health care organisation in Sweden. The aim of this paper is to describe and analyse the different types of professional work in these organisations. Some implications of the use of IT in different types of professional work are addressed.