BEIJING, Feb. 24 (Xinhua) -- A recent survey by China's State Post Bureau said 35.8 percent of delivery workers considered their occupation "promising" and would like to continue in that position.

The survey consisted of 6,000 delivery people across China mostly born in the 1980s and 1990s.

About 76 percent of the delivery workers are from rural areas, while nearly 16 percent are from towns or counties, according to the survey.

Major sources of stress for delivery workers include low wages and insufficient benefits, lack of understanding of their job from customers and the public, long working hours and little chances of promotion, the survey said.

Most of those surveyed earn less than 5,000 yuan (743 U.S. dollars) per month but generally gain more during the annual Double 11 online shopping spree in November, during which over 80 percent of the country's delivery workers handle more than 200 packages per day.

China's express delivery industry is rapidly developing, with around 3 million delivery workers.

"Delivery worker" was added to the revision of the national occupation list of China in 2015, meaning it has been recognized by the state as an occupation.