Answer to this week's riddle

Travis Hale

Again, the riddle:  

Greece's deficit is a major component of the global financial crisis.  A new paper suggests that what contributes to almost one-third of the Greek deficit?

Answer:  Tax evasion by self-employed workers.


Source: http://faculty.chicagobooth.edu/adair.morse/research/ArtavanisMorseTsoutsouraTaxEvasionGreeceSept2012.pdf