Chinese President Hu Jintao has, in a written instruction, called for more efforts to promote virtues and deeds of a model worker, Guo Mingyi.

Guo, 52, is known for his generosity in assisting colleagues and for supporting poor students go to school.

Li Changchun, a member of the Standing Committee of the Political Bureau of the Communist Party of China (CPC) Central Committee, Monday urged the general public, especially young people, to learn from Guo's virtues of selfless devotion and enthusiasm for his work.

Guo Mingyi has worked in an iron mine in Anshan City in northeast China's Liaoning Province since 1982. He has worked more than 15,000 hours of overtime over the past 15 years.