Kasz, I few things to prove you wrong:
The average U.S. worker produces $63,885 of wealth per year, more than their counterparts in all other countries, the International Labor Organization said in its report. Ireland comes in second at $55,986, followed by Luxembourg at $55,641, Belgium at $55,235 and France at $54,609.
Americans may be more productive than other nations, but they also get paid higher wages. You have to pay Americans for overtime, they dont just stay and work for pop and peanuts. That $8,000 more wealth generation hails in comparison to cost of benefits.
http://www.msnbc.msn.com/id/20572828/
Your ease of firing example is laughable in the fact of actual statistics:
http://www.nationmaster.com/graph/eco_ent_hir_fir_wor_dif_of_fir_ind-hiring-firing-workers-difficulty-index
The end all argument is economic growth. America is lagging behind our mentioned counterparts, still spending freely on imports like its going out of style (it actually is).
http://www.nationmaster.com/graph/eco_gdp_rea_gro_rat-economy-gdp-real-growth-rate