Cika wannan jumlar: A ranar 5 ga Nuwamba, 2007, wani
An fara yajin aiki tsakanin Writers Guild of America, Gabas (WGAE), Writers Guild of America, yamma (WGAw) da kuma Alliance of Motion Picture da Television Producers (AMPTP). An yi hasashen yajin aikin ne don tilasta shirye-shiryen talabijin su kawo karshen lokutan su da wuri, saboda ba za a sami wani rubutun gaba ba har sai an cimma yarjejeniya. Saboda yajin aikin marubucin, goma sha biyu ne kawai daga cikin sassan ashirin da biyu da aka ba da umarni aka yi tunanin za a samar da su. Tare da ƙarshen gani, Mark Schwahn ya bayyana, "Ko da yake muna da sabbin abubuwa guda shida da suka rage, babu wanda ya fi farin ciki game da ƙarshen yajin aikin fiye da yadda muke a One Tree Hill". A ranar 5 ga Fabrairu, 2008, "One Tree Hill"'s ratings sun kasance na biyu ne kawai ga "Smallville" don wasan kwaikwayo na wasan kwaikwayo a CW. Schwahn ya ci gaba da cewa "za mu so damar ci gaba da kakar wasa ta biyar, kuma idan aka amince da sabon kwangilar WGA, da fatan za mu iya yin hakan. Idan ba haka ba, za mu gan ku a kakar wasa ta shida. " A ranar 15 ga Fabrairu, CW ta ba da sanarwar cewa za a samar da ƙarin ɓangarori shida don rufe kakar saboda ƙarshen yajin aikin.