勞(lao)(lao)(lao)動(dong)(dong)(dong)合(he)(he)同(tong)(tong)(tong)分為固定(ding)期(qi)限勞(lao)(lao)(lao)動(dong)(dong)(dong)合(he)(he)同(tong)(tong)(tong)、無(wu)固定(ding)期(qi)限勞(lao)(lao)(lao)動(dong)(dong)(dong)合(he)(he)同(tong)(tong)(tong)和以完成一(yi)定(ding)工作任務(wu)為期(qi)限的(de)勞(lao)(lao)(lao)動(dong)(dong)(dong)合(he)(he)同(tong)(tong)(tong)。用(yong)(yong)人(ren)單(dan)位(wei)(wei)和勞(lao)(lao)(lao)動(dong)(dong)(dong)者(zhe)選擇訂(ding)立什么類(lei)型(xing)的(de)勞(lao)(lao)(lao)動(dong)(dong)(dong)合(he)(he)同(tong)(tong)(tong)，由(you)用(yong)(yong)人(ren)單(dan)位(wei)(wei)和勞(lao)(lao)(lao)動(dong)(dong)(dong)者(zhe)協商決定(ding)。但是考慮到勞(lao)(lao)(lao)務(wu)派(pai)遣合(he)(he)同(tong)(tong)(tong)的(de)特殊性，為了保(bao)護被(bei)派(pai)遣勞(lao)(lao)(lao)動(dong)(dong)(dong)者(zhe)的(de)利(li)益，我國《勞(lao)(lao)(lao)動(dong)(dong)(dong)合(he)(he)同(tong)(tong)(tong)法(fa)》第58條對(dui)勞(lao)(lao)(lao)務(wu)派(pai)遣單(dan)位(wei)(wei)與被(bei)派(pai)遣勞(lao)(lao)(lao)動(dong)(dong)(dong)者(zhe)訂(ding)立的(de)勞(lao)(lao)(lao)動(dong)(dong)(dong)合(he)(he)同(tong)(tong)(tong)的(de)種類(lei)和期(qi)限做出了特別規(gui)定(ding)：

勞(lao)務(wu)派遣單位和被派遣勞(lao)動(dong)者只能訂(ding)立固定勞(lao)動(dong)合同

無(wu)固定勞(lao)(lao)(lao)(lao)動(dong)(dong)合(he)(he)同(tong)(tong)(tong)(tong)(tong)屬(shu)于長期(qi)勞(lao)(lao)(lao)(lao)動(dong)(dong)合(he)(he)同(tong)(tong)(tong)(tong)(tong)，要(yao)求勞(lao)(lao)(lao)(lao)務派遣(qian)(qian)單(dan)位(wei)與被(bei)派遣(qian)(qian)勞(lao)(lao)(lao)(lao)動(dong)(dong)者(zhe)訂立(li)固定期(qi)限勞(lao)(lao)(lao)(lao)動(dong)(dong)合(he)(he)同(tong)(tong)(tong)(tong)(tong)。以完成一定工(gong)作(zuo)任務為期(qi)限的勞(lao)(lao)(lao)(lao)動(dong)(dong)合(he)(he)同(tong)(tong)(tong)(tong)(tong)是短期(qi)勞(lao)(lao)(lao)(lao)動(dong)(dong)合(he)(he)同(tong)(tong)(tong)(tong)(tong)，與勞(lao)(lao)(lao)(lao)務派遣(qian)(qian)合(he)(he)同(tong)(tong)(tong)(tong)(tong)有共同(tong)(tong)(tong)(tong)(tong)之處(chu)(chu)。但是，這種勞(lao)(lao)(lao)(lao)動(dong)(dong)合(he)(he)同(tong)(tong)(tong)(tong)(tong)期(qi)限的不(bu)太明(ming)確，有可能使被(bei)派遣(qian)(qian)勞(lao)(lao)(lao)(lao)動(dong)(dong)者(zhe)處(chu)(chu)于無(wu)工(gong)作(zuo)狀態，而且勞(lao)(lao)(lao)(lao)務派遣(qian)(qian)單(dan)位(wei)和以接受勞(lao)(lao)(lao)(lao)務派遣(qian)(qian)形式用工(gong)的單(dan)位(wei)的權利(li)和義務難區分(fen)，增加了管(guan)理難度。固定期(qi)限勞(lao)(lao)(lao)(lao)動(dong)(dong)合(he)(he)同(tong)(tong)(tong)(tong)(tong)的期(qi)限明(ming)確，權利(li)和義務也(ye)好分(fen)清，為了保護勞(lao)(lao)(lao)(lao)動(dong)(dong)者(zhe)利(li)益，勞(lao)(lao)(lao)(lao)務派遣(qian)(qian)單(dan)位(wei)與被(bei)派遣(qian)(qian)勞(lao)(lao)(lao)(lao)動(dong)(dong)者(zhe)訂立(li)勞(lao)(lao)(lao)(lao)動(dong)(dong)合(he)(he)同(tong)(tong)(tong)(tong)(tong)，只能訂立(li)固定期(qi)限勞(lao)(lao)(lao)(lao)動(dong)(dong)合(he)(he)同(tong)(tong)(tong)(tong)(tong)。