If the vessel you are joining is covered by a union agreement, you can access the applicable CBA (Collective Bargaining Agreement) via the landing page of of the App. 

The CBA document details all the terms and conditions of the crew employed on the ship. It specifies entitlements such as pay (in the form of a wage scale), working hours, etc. 

From the home page, scroll down and click on 'Assignment documents'

Then click on 'C.B.A.'