The reorganisation had largely been completed and no significant lay-offs were involved.
He refused to disclose the headcount at the Beijing office or the number who opted to resign.
Maersk's six sub-regional offices, in Qingdao, Shanghai, Xiamen, Guangzhou, Shenzhen and Hong Kong, would be merged into three – in Qingdao, Shanghai and Hong Kong – to cover north China, east China and south China.
Maersk Line's operations in Greater China would be grouped under the north Asia regional office, headquartered in Hong Kong.
The mainland headquarters of Maersk Group, which also has terminal operations and logistics services, would remain in Beijing.
Maersk Line earlier reshuffled its 14 regional offices, merging the northeast Asia, Greater China, Southeast Asia and Oceania offices into two – north Asia and Asia-Pacific.
The company said the restructuring was not aimed at cutting costs.