問 最近(jin)公司搬進了新的(de)辦公區(qu)，要求員工(gong)重新簽訂合(he)同，增加(jia)新的(de)內(nei)容，請問勞動合(he)同變(bian)更的(de)情形有哪些呢？

答 首先對變(bian)更(geng)(geng)(geng)勞動(dong)(dong)合(he)同(tong)，用人單(dan)位和勞動(dong)(dong)者之間應當(dang)(dang)采(cai)取自(zi)愿(yuan)協商(shang)的(de)(de)方式(shi)，不(bu)允許合(he)同(tong)的(de)(de)一方當(dang)(dang)事人未經協商(shang)單(dan)方變(bian)更(geng)(geng)(geng)勞動(dong)(dong)合(he)同(tong)。一當(dang)(dang)事人未經對方當(dang)(dang)事人同(tong)意任意改(gai)變(bian)合(he)同(tong)內(nei)(nei)容的(de)(de)，在法律上是(shi)(shi)無效(xiao)行為，變(bian)更(geng)(geng)(geng)后的(de)(de)內(nei)(nei)容對另(ling)一方沒(mei)有約束力(li)，而且這種(zhong)擅自(zi)改(gai)變(bian)合(he)同(tong)的(de)(de)做法也是(shi)(shi)一種(zhong)違約行為。勞動(dong)(dong)合(he)同(tong)的(de)(de)變(bian)更(geng)(geng)(geng)只(zhi)是(shi)(shi)對原勞動(dong)(dong)合(he)同(tong)的(de)(de)部(bu)分內(nei)(nei)容作修改(gai)、補充或者刪減(jian)，而不(bu)是(shi)(shi)對合(he)同(tong)內(nei)(nei)容的(de)(de)全部(bu)變(bian)更(geng)(geng)(geng)。