Literature has shown the influence of the social, cultural and organisational aspects involved in the process of developing information systems. The Unified Process (UP) has been widely used in the software industry, but literature has shown its drawbacks when applied to the modelling of human actions in the social and organisational contexts. Our research investigates the use of Organisational Semiotics (OS) methods combined with the UP to compose a complete cycle of system development, aiming at bringing social constructs to the development process of information systems. 112119Bonacin, R., (2004) A Design Model to Support Cooperation Based on Participatory Design and Organisational Semiotics, , Ph.D. Thesis, State University of Campinas, Campinas, BrazilBonacin, R., Baranauskas, M.C.C., Liu, K., From ontology charts to class diagrams: Semantic analysis aiding systems design (2004) 6th ICEIS, , PortugalDourish, P., Developing a reflective model of collaborative systems (1995) ACM Transactions on HCI, 2 (1). , March 1995Ehn, P., Lowgren, J., Design for quality-in-use: Human-computer interaction meets information systems development (1997) Handbook of Human- Computer Interaction, , M. Helander, T.K. Landauer, P. Prabhu (eds.), 2nd ed. Elsevier Science(2002) Enterprise Unified Process, , http://www.enterpriseunifiedprocess.info/, EUP, in the web, accessed in 3/8/2004Heusden, B., Van Jorna, R.J., (2000) Reconsidering the Standard: A Semiotic Model of Organization(s), , Groningen University, Groningen, New ZealandJacobson, I., (1996) Object-Oriented Software Engineering: A Use Case Driven Approach, , ACM Press, Addison-Wesley EdJacobson, I., Booch, G.B., Rumbaugh, J., (1999) The Unified Software Development Process, , Addison-WesleyKruchten, P., (1999) The Rational Unified Process: An Introduction, , Addison WesleyLarman, C., (2002) Applying UML and Patterns: An Introduction to Object-Oriented Analysis and Design and the Unified Process, , Prentice Hall, IncLeland, N., (2002) Rational Unified Process, , http://www.cs.tufts.edu/g/180/fall02/public_html/team1/index.html, in the, accessed in 3/8/2004Liu, K., Ades, Y., Stamper, R.K., Simplicity, uniformity and quality - The role of semantic analysis in system development (1994) Software Quality Management, 2, pp. 219-235. , Computational Mechanics Publications, ISBN: 1-85312-353-6Liu, K., (2000) Semiotics in Information Systems Engineering, , Cambridge University PressThe circulation document (1995) Organizational Semiotics Workshop, , OSW, Enschede apudPressman, R.S., (2001) Software Engineering: A Practitioner's Approach, , McGraw-Hill, 5th EditionSimoni, C.A.C., Baranauskas, M.C.C., Launching organizational semiotics in the real world: How to prepare for it? (2003) The 6th International Workshop on Organizational Semiotics, , Reading, UKSimoni, C.A.C., Baranauskas, M.C.C., Organizational semiotics embedded in a system development cycle: A case study in a business organization (2004) 6th ICEIS - International Conference on Enterprise Information Systems, , Porto, PortugalSimoni, C.A.C., Baranauskas, M.C.C., The practice of software development and the organizational semiotics approach: A case study in business organizations (2004) The 7th International Workshop on Organizational Semiotics, , PortugalSommerville, I., Software engineering (2001) International Computer Science Series, , Addison-Wesley Publishers Limited - USA, 6th EdStamper, R.K., (1973) Information in Business and Administrative Systems, , John Wiley and Sons, New York apudStamper, R.K., Social Norms in requirements analysis - An outline of MEASUR (1993) Requirements Engineering, Technical and Social Aspects, , Jirotka, M. Goguen, J. and Bickerton, M. (eds.), Academic Press, New YorkStamper, R., Liu, K., Hafkamp, M., Ades, Y., Understanding the roles of signs and norms in organizations - A semiotic approach to information system design (2000) Behaviour & Information Technology, 19 (1), pp. 15-27