Office work is situated social action, a notion that includes both the
social actions of computer systems in their interactions with office
workers and other computer systems. This notion can be operationalized
by dialogue context, which can then be used as a design parameter in
office information systems. Observational data were collected by video
recording a secretary's activities over an 8 hour duration. The data
were analysed and discussed with the secretary to identify her action
units. These action units were then related using an action graph. An
interpretation of the action graph and observational data suggest cert
ain features that a dialogue context management mechanism should have.
They are: (1) a good match between applications and activities, (2) a
utomated tools to support routine activities, and (3) informative and
manageable metaphor to model the real world.