1. A method for representing operational risk information in a business process model, said method comprising: receiving, at a computer device, first data defining a job type that is to be processed in a business process model, said job types having associated job attributes specifying for determining an order of activities to be performed; receiving, at said computer device, second data for each job type, said second data specifying one or more resources and associated functions of resources that support activity execution and one or more preconditions to be fulfilled by the resources performing said functions, said second data for each job type further comprising a defined set of performance measures related to activity execution and to job output quality, said job output quality including job quality states defined according to different levels of quality; receiving, at said computer device, third data defining a set of risk events that potentially compromise said performance measures, a risk event having assigned one or more attributes specifying risk event frequency and severity level, said set of risk events being linked to one or more resources; receiving, at said computer device, fourth data specifying one or more preconditions for said activities in terms of requirements to be fulfilled to begin activity execution; providing a function for each activity that maps a state of a resource, job, external factor, as well as an occurrence or non-occurrence of one or more errors, to output states of said resources and jobs and to said activity execution performance measures; and, implementing a graphical model notation for depicting, on said computer device, a business model representation extended to incorporate said first, second third and fourth data using said activity mapping function, said business model representation displayed to include representation and impact of operational risk.