Google hates Microsoft. It is not straightforward to sync an Outlook calendar on Google devices such as Nexus.
1. Export your Outlook calendar (i.e. work calendar) to csv file. In Microsoft Outlook, go to File -> Open and export -> Import and export -> Export to a file -> Comma Separated Values -> Select destination folder: choose Calendar
2. Import the csv file to your Google Calendar. In your Google Calendar -> Other calendars -> Import calendar -> choose the csv file
3. Once it is imported to your Google Calendar, your Nexus will sync it automatically if there is a wifi connection.