The 24/01/2020 was issued a "Notice of the General Office of the Ministry of Human Resources and Social Security on properly handling labor relations during the prevention and control of pneumonia outbreaks of new coronavirus infection"
Official article here:
We invite you to read a translated version, but here are the principal points.
If an employee is unable to perform his tasks, because of sickness, because of quarantine, medical isolation, because of government restriction or emergency measures from the government (this is the case actually). The employer shall pay wages to the employee and shall keep the employee till the end of the measure or till the employee quarantine, sickness or isolation period ends.
In case the labor contract ends up in this period, the employer shall reconduct the labor contract until the end of the medical period, isolation period, quarantine period or until the end of emergency measures from the government.
If an enterprise suspends production within a wage cycle, this cycle wage is due in totality.
In case the situation of quarantine, emergency measure, isolation, sickness continues for a next wage cycle the employer can adjust salary to a "living expense compensation". Living expense standards will be announced by provinces, autonomous regions and municipalities. (around 860元 in 2018 for Tianjin)
In case employees and employer fail to go to arbitration in the time allowed, the arbitration process period will be postponed.
Local human resources and social security departments shall strengthen guidance and services for laborers in affected enterprises, increase labor security supervision and law enforcement, and effectively protect the legitimate rights and interests of employees.