  Despite the dominance of the service sector in the last decades, there is
still a need for a strong foundation on service design and innovation. Little
attention has paid on service modelling, particularly in the collaboration
context. Collaboration is considered as one of solutions for surviving or
sustaining the business in the high competitive atmosphere. Collaborative
services require various service providers working together according to
agreements between them, along with service consumers, in order to co-produce
services. In this paper, we address crucial issues in collaborative services
such as collaboration levels, sharing data and processes due to business
inter-dependencies between service stakeholders. Afterward, we propose a model
for Collaborative Service Modelling, which is able to cover identified issues.
We also apply our proposed model to modelling an example of healthcare services
in order to illustrate the relevance of our modelling approach to the matter in
hand.
