Isifo sokukhathala okungamahlalakhona yisifo esiyinkimbinkimbi esivela ekusebenzeni ngokweqile okuhlelekile. Izimpawu zayo ukuphazamiseka kokulala, ukukhathala, ukunganaki, ukwehla kwesimo semizwa, kuphenduke ulaka, kunciphise amasosha omzimba. Ukwelashwa kwesifo esingapheliyo sokukhathala kuyinkqubo ende, ehambisana nayo, okokuqala, nokuphuma kwesiguli enqubeni yomsebenzi.
Kodwa-ke, ososayensi abavela e-Oxford bathole indlela yokuvimbela ukukhula kwayo ezigabeni zokuqala ngosizo lwendlela yokwelashwa okungajwayelekile. Abantu abanezigaba zokuqala zesifo sokukhathala okungamahlalakhona bayalelwe ukuthi bazibandakanye kunoma imuphi umsebenzi womzimba noma wengqondo ongahlobene nomsebenzi wabo oyinhloko: ingadi, imishini yezimoto, ukudansa, ukufunda ulimi - konke esikubeka njengento yokuzilibazisa. Le misebenzi, ucwaningo lukhombisile, yenyusa ithoni yabahlanganyeli, yabasiza ukuba babe nesimo sengqondo esihle empilweni futhi bathuthukise impilo yabo. Futhi ukuvivinya umzimba kwasiza ekuxazululeni izinkinga zokulala.
Ukwelashwa emsebenzini kukhonjisiwe ukukhulula abantu abaningi ekukhathaleni, ekucindezelekeni, ekulaleni kwasemini, ukungasebenzi komzimba, ubuhlungu bemisipha, i-hypoxia, kanye namakhono wokunaka angasebenzi kahle. Abahlanganyeli basebenze nabafundisi abaqeqeshwe ngokukhethekile, kodwa-ke, ngokusho kochwepheshe, okuhlukile kokulashwa emsebenzini ukuthi noma yimuphi umuntu angashintsha ngokuzimela indlela yakhe yokuphila ejwayelekile futhi noma ngabe isiphi isikhathi athathwe yibhizinisi angajwayele noma into ayithandayo.