In my view, there are costs to going out early and few benefits. First, there is the nightmare scenario in which you get a job that requires you to teach while still trying to finish your dissertation - beware, these rocks have sunk many a ship. You should not go out unless you are confident that your dissertation can be finished (meaning signed off by all parties not just finished in your head) *well* before your job begins (i.e. give yourself a summer to move and develop course notes).
Second, I think that initial placement is quite important. The quality of your colleagues will greatly aid you in your future work and you will be much better off if you begin with a 3/3 or less teaching load rather than a 4/4 which might happen if you go out in a weak position - so it's better to begin with a strong start. Third, one or two years in another instituion won't help you at all unless you have published a quick string of papers that indicates that you were low-placed low to begin with. The advantage of getting a job early is the money. Individual circumstances vary but you should think of life-cycle smoothing etc. Of course delay is not worthwhile unless you make the most of it. In my view, the ideal situation is to arrange to teach 1 class at your own or nearby institution to get you some money and experience and to use your free time to finish your dissertation, hone your working papers, and gather more skills - then go out onto the market confident that you have the skills, experience and qualifications necessary to do as well as possible. My comments are aimed at those interested in the academic market. Chresten is right that the situation is different if you are less interested in pursuing this course. If you don't expect to compete in the publishing market, for example, then quality of colleagues is less important and actual experience in whatever industry you find a job in is more important thus going out earlier is less costly (but still beware of having to finish your dissertation and start a new job at the same time). Alex -- Alexander Tabarrok Department of Economics, MSN 1D3 George Mason University Fairfax, VA, 22030 Tel. 703-993-2314 and Director of Research The Independent Institute 100 Swan Way Oakland, CA, 94621 Tel. 510-632-1366