1. A method for employment of role-based access control (RBAC) techniques for controlling the ability of individuals to carry out operations within a workflow process, comprising the steps of: (1) decomposing the workflow process into sequential and parallel segments, each comprising one or more activities, wherein access to at least one specific instance of a resource is required for performance of each activity, said segments being ordered for performance in a defined sequence; (2) creating roles corresponding to each segment in a role-based access control (RBAC) system, wherein a role is the means by which access to a specific instance of a resource is determined, whereby each of the activities comprised by each of the segments is assigned to one or more of the roles corresponding to each segment; (3) assigning one or more individuals to each role; (4) activating each role when all activities of all preceding segments have been successfully performed, by granting individual(s) assigned to an activated role permission to perform each activity within the corresponding successive segment; (5) withdrawing each permission as the corresponding activity is completed; and (6) deactivating each role as the corresponding segment is completed.