Ali Nouri - Department of Law Borujen Branch, Islamic Azad University Borujen, Iran
Davood Bozorgmehr - Department of Law Borujen Branch, Islamic Azad University Borujen, Iran

One of the new discussions in civil responsibility that jurists less pay attention to it. The survey of the role of common law in holding fault of business responsibilities that placed these responsibilities in the group of legal duties the owner of these businesses and not contractual therefore, had been paid attention common law in professional responsibilities as a special common criterion of trade, a rule for holding fault in technological businesses. One of significance paint in this survey is the difference between the criterion of differential fault in this businesses finally, seems more uses of independent special common rules, at the for me of writing collection of rule and laws of owner of that skill or profession of idiomatically businesses or defer to word falling laws emptiness, can useful in this field of course in situation don’t contrast to religious law.

Special convention, Common criteria, Profession and business responsibility, Fault, Loss.