The work disincentive appears to be one of the biggest obstacles to basic income. There are concerns about paying people for doing nothing and fears of people withdrawing from the labour market because they have income security. It is important therefore for basic income advocates to understand the arguments and assumptions underlying the work disincentive concerns in order to successfully counter them. This article considers the primary assumptions, including those about what motivates people to work, what activities count as good, job availability, the distinction between the disabled and those able to work, and whether it is wrong to pay people for doing nothing; this article also provides a critical assessment.