iOS 8.1.2 and Outlook 2010 Calendar Sync Issue
Settings > General > Mail, Contacts, And Calendars > Scroll to the bottom where it says Default Calendar and make sure the "On This iPhone" option isn't checked. If it is then you need to select the appropriate calendar for this be it your FIRM or Corporate Calendar. An option your IT Administrator or if your FIRM or Corporation requires to have an app for would have been preloaded and installed already on the iPhone or iOS Configuration