There's some good economic theory there. One of the points I was making in a a previous post was to note that the world doesn't end if you do establish a base wage - recognising that this action is performed for primarily social equity reasons, rather than economic. I used as the example Australia's scheme (not suggesting it's perfect, but rather that it serves a purpose).
Since those previous postings, I got to wondering about not GDP or average salary levels, but whether there was a correlation between lack of minimum salary levels and higher levels of national poverty.
Unfortunately the inability to isolate these two factors alone amongst all other economic and social levers will, allow the argument to continue ad infinitum, BUT the OECD figures (using USA and Australia as the previously argued examples) would appear the indicate *something*..
Have a play here (unfortunately the data is a little dated, but it's the latest I could find that did this):
http://graphs.gapminder.org/communityproxy/ChartDataServlet?key=plL7_TnAeMdBLyRVf1rehGg#$majorMode=chart$is;shi=t;ly=2003;lb=f;il=t;fs=11;al=30;stl=t;st=t;nsl=t;se=t$wst;tts=C$ts;sp=6;ti=2003$zpv;v=0$inc_x;mmid=XCOORDS;iid=plL7_TnAeMdBAvXX8r5__Vw;by=ind$inc_y;mmid=YCOORDS;iid=plL7_TnAeMdAktDNHMaxdJQ;by=ind$inc_s;uniValue=20;iid=plL7_TnAeMdCTpDLPYo-_VA;by=universal$inc_c;uniValue=255;gid=CATID1;iid=plL7_TnAeMdC8GEnotAixIg;by=grp$map_x;scale=lin;dataMin=1.814;dataMax=36$map_y;scale=lin;dataMin=2.77;dataMax=22$cd;bd=0$inds=i13_t001994,,,,;i37_t002003,,,,;i238_t002003,,,,;i239_t002003,,,,
Damn! That's a long url: you'd better copy/paste it into the browser address bar...