Permanent jobs need to be "put back" into the passport office if another backlog is to be prevented, according to the union which represents their workers.
Mike Jones, from the PCS union, said passport office employees were walking out because there needed to be "a permanent solution" to the staffing shortages which had caused the original backlog.
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The National People's Congress also appointed close Xi ally Wang Qishan to the formerly ceremonial post of vice president.
Highs of 7 Celsius (45F).
The move, which had been expected, was made on the recommendation of FBI disciplinary officials.