You currently live on NovusCorp's property and pay them rent for the privilege. In return, you have no responsibilities, limited access, and are likely to be shooed away from most areas of the ship. You might want to talk to the Recruiter to get a job, or ask the Head of Personnel if there are any job openings available.
Bare minimum requirements: Be a good passenger and citizen of SolGov. Don't get in the crew's way.
It is possible, though difficult, to play as a civilian traitor, as your lack of jumpsuit is easily spotted. Your best bet is to convince the company to hire you, then take advantage of the newfound access you receive to hopefully raise havoc.