Simply having a PhD may not be enough — you need to marry scientific expertise with the right skills. During the past few decades, the demand in the labour market for scientists and engineers educated to doctoral level has been a matter of considerable uncertainty and debate. Some say that the number of trainees being produced is too low to keep pace with demand, whereas others believe there are too few opportunities for jobseekers once they have completed their training.

Link (Nature Jobs, 01/2007)