實際崗位月合同中說的崗位不符合同有效么?

[合同協議] ???解決者:熱心網友

我應聘的是文(wen)員,現在公司讓我去銷售,實際崗(gang)位月合同(tong)(tong)中(zhong)說的崗(gang)位不符(fu)合同(tong)(tong)有(you)效么?

勞(lao)動(dong)合同(tong)法規定,用(yong)工(gong)第一天,用(yong)人單(dan)位應當和勞(lao)動(dong)者簽訂(ding)書(shu)面勞(lao)動(dong)合同(tong),勞(lao)動(dong)合同(tong)中,崗位必須(xu)進行明確,除非雙(shuang)方(fang)協商同(tong)意,否則單(dan)方(fang)無(wu)權更改。