Potential employers will often ask for the names of people who can provide a reference for you and vouch for you. This may be a previous employer, or if you haven’t worked, then someone who knows you well, although it should usually not be a family member. You may be asked for the names of referees as part of the application or it may be later in the process, but it a good idea to think in advance of who would make a good referee. If it is a previous employer then they usually expect to be asked for references, but if it is non-work reference, you should ask their permission to use their name.
There is more information on references in the section on ‘Answering and asking questions at interview’.