You may not love it, but your workplace does and Microsoft finally released a native version for iOS.
Per The Unofficial Apple Weblog, Microsoft has released two different native versions of its Outlook Web Application for iOS, one for iPhone and one for iPad. OWA for iOS connects to the email, calendar, and contacts of Office 365 of business subscribers giving them complete access to their Outlook on the go. Beyond those basic tools the app features push notifications and a powerful voice search that can access your contacts or bring up your calendar.
iOS for iPhone and iPad requires iOS 6.0 or later to install and run.