A flexible metadata driven and workflow based report generation system is disclosed. According to various embodiments, the system comprises at least one client application on a client terminal and a report manager system. The client application allows a user to run a report from a user interface having the flexibility to choose various parameters that affect the content of the generated report. The report manager system comprises a metadata service and a workflow controller service. The metadata service is for retrieving report metadata (report name, parameter(s) and their parameter values) to be displayed on the user interface to allow the user to choose parameter values and run a report job. The controller is for receiving messages from the client terminal upon submission of a report job and, based on the received messages, sending messages to one or more service components for executing the report job in a sequence of determined discrete steps. A report workflow defines the steps to be invoked in the execution of a report and is stored in tables in a database accessible via the metadata service. The services components may include data accessors, formatting services, language translation services, bundling services, distribution services and/or scheduling services.