As the temperature tops 105 F in the Yangtze River delta, firms are seeing a temporary rise in wages as well as requests for longer lunch breaks and free summer drinks.

Employers find it especially difficult to recruit plastics injection press operators, construction workers and cooks, among other jobs, according to an official at the Andemen Migrant Worker Market in Nanjing quoted in the Yangtze Evening News.

Many factory buildings in the Yangtze River Delta are not air conditioned.

In order to solve a seasonal worker shortage, companies are offering wages that are 30-50 percent higher than normal.

The Jiangsu Province Job Center released latest data that indicate a 10 percent increase of the number of hiring companies, fewer job applicants and lower recruitment success rate.