The Email Voting 2 OMG example (http://www.omg.org/spec/BPMN/2.0/examples/ZIP/eMail%20Voting/) shows two cases where a sub process has a timer event that is supposed to be associated with tasks with the sub processes. Compare the attached image to the one in the OMG example pdf (inside the zip http://www.omg.org/spec/BPMN/2.0/examples/ZIP/10-06-03.zip).