The family visa is for immediate family (spouse and/or children) of someone already working legally in Italy. If that person is an EU resident, the paperwork is quick: All you need is a letter from your spouse and the marriage certificate. You also need a nulla osta (no obstacle) document from the local police headquarters if your spouse is not an EU resident but legally working there, plus any children’s birth certificates if they are coming, too. If, on the other hand, your spouse is still in the process of obtaining a work permit, you will need additional paperwork, such as proof of suitable family housing. In general, it is always easier applying for such residency once your family member has the job.