問 最近公司(si)搬進了新(xin)的(de)(de)辦公區，要求員工(gong)重新(xin)簽訂合同(tong)，增加新(xin)的(de)(de)內容(rong)，請(qing)問勞動合同(tong)變更的(de)(de)情形有哪些呢(ni)？

答 首(shou)先對(dui)變(bian)更勞(lao)(lao)動(dong)合(he)(he)(he)同(tong)(tong)(tong)，用人(ren)(ren)單位和勞(lao)(lao)動(dong)者之間應當采取自愿(yuan)協商(shang)的方式，不(bu)允許合(he)(he)(he)同(tong)(tong)(tong)的一(yi)(yi)(yi)方當事(shi)人(ren)(ren)未經協商(shang)單方變(bian)更勞(lao)(lao)動(dong)合(he)(he)(he)同(tong)(tong)(tong)。一(yi)(yi)(yi)當事(shi)人(ren)(ren)未經對(dui)方當事(shi)人(ren)(ren)同(tong)(tong)(tong)意任意改(gai)變(bian)合(he)(he)(he)同(tong)(tong)(tong)內(nei)(nei)容的，在法律上是(shi)無效行(xing)為，變(bian)更后的內(nei)(nei)容對(dui)另一(yi)(yi)(yi)方沒(mei)有約(yue)束力，而(er)且這(zhe)種(zhong)擅(shan)自改(gai)變(bian)合(he)(he)(he)同(tong)(tong)(tong)的做法也是(shi)一(yi)(yi)(yi)種(zhong)違約(yue)行(xing)為。勞(lao)(lao)動(dong)合(he)(he)(he)同(tong)(tong)(tong)的變(bian)更只是(shi)對(dui)原(yuan)勞(lao)(lao)動(dong)合(he)(he)(he)同(tong)(tong)(tong)的部分(fen)內(nei)(nei)容作(zuo)修(xiu)改(gai)、補充或者刪減，而(er)不(bu)是(shi)對(dui)合(he)(he)(he)同(tong)(tong)(tong)內(nei)(nei)容的全部變(bian)更。