The term of the labor contract can only restrict the employers.

劳动合同的期限只能限制雇主。

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If only the probation period is stipulated in a labor contract, it shall be untenable and the said period shall be the term of the labor contract.

劳动合同仅约定试用期的，试用期不成立，该期限为劳动合同期限。

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Where the term of a labor contract is above one year but less than three years, the probation period thereof shall be less than two months.

劳动合同期限一年以上不满三年的，试用期不得超过二个月；

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Homeowners typically sign a long-term contract of 15 to 20 years with the companies that pay for solar equipment and labor and make sure the solar panels work properly during the lifetime of the contract.

FORBES: Solar Leases Will Drive Solar Home Growth to $5.7B