8 1 9 ) ▁represents ▁the ▁first ▁liberal ▁critique ▁of ▁la isse z - f aire ▁econom ics . ▁He ▁was ▁one ▁of ▁the ▁pione ering ▁advoc ates ▁of ▁un emp loyment ▁ins urance , ▁sick ness ▁benefits , ▁a ▁progress ive ▁tax , ▁reg ulation ▁of ▁working ▁hours , ▁and ▁a ▁p ension ▁scheme . ▁He ▁was ▁also ▁the ▁first ▁to ▁coin ▁the ▁term ▁pro let ariat ▁to ▁refer ▁to ▁the ▁working ▁class ▁created ▁under ▁capital ism , ▁and ▁his ▁discussion ▁of ▁mie ux ▁value ▁anticip ates ▁the ▁Marx ist ▁concept ▁of ▁sur plus ▁value . ▁According ▁to ▁G are th ▁St ed man ▁Jones , ▁" m uch ▁of ▁what ▁S ism ond i ▁wrote ▁became ▁part ▁of ▁the ▁standard ▁re per toire ▁of ▁social ist ▁criticism ▁of ▁modern ▁industry ." ▁ ▁Early ▁life ▁His ▁pat ernal ▁family ▁seem ▁to ▁have ▁bor ne ▁the ▁name ▁Simon de , ▁at ▁least ▁from ▁the ▁time ▁when ▁they ▁migr ated ▁from ▁D au ph iné ▁to ▁Switzerland ▁at ▁the ▁rev ocation ▁of ▁the ▁ed ict ▁of ▁N antes . ▁It ▁was ▁not ▁till ▁after ▁S ism ond i ▁had ▁become ▁an ▁author ▁that , ▁obser ving ▁the ▁identity ▁of ▁his ▁family ▁arms ▁with ▁those ▁of ▁the ▁once ▁fl our ishing ▁P isan ▁house ▁of ▁the ▁S ism ond i ▁and ▁finding ▁that ▁some ▁members ▁of ▁that ▁house ▁had ▁migr ated ▁to ▁France , ▁he ▁assumed ▁the ▁connection ▁without ▁further ▁proof ▁and ▁called ▁himself ▁S ism ond i . ▁ ▁The ▁Sim ond es ,