劳动合同的变更是指在劳动合同开始履行但尚未完全履行之前，因订立劳动合同的主客观条件发生了变化，当事人依照法律规定的条件和程序，对原合同中的某些条款修改、补充的法律行为。
变更后的劳动合同文本由用人单位和劳动者各执一份。
The employer and the worker shall hold one copy of the text of post-alteration labor contract respectively.
第三十三条用人单位变更名称、法定代表人、主要负责人或者投资人等事项，不影响劳动合同的履行。
Article 33 Alterations of the name, legal representative, key principal or investor of any employer may not influence the performance of the labor contracts.
企业转产、重大技术革新或者经营方式调整，经变更劳动合同后，仍需裁减人员的；
The enterprise has changed products, made significant technological renovation or adjusted the form of business operation, and it still needs to have reduction after the labor contract is altered; or
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