Construction sites in Japan are enjoying a wave of automation amid an increasing shortage of laborers, with the introduction of robots to do heavy lifting and drones that instantly collect aerial data.

As the industry ages along with the country's graying society, construction companies are forced to look for ways to boost productivity and efficiency.

According to the Japan Federation of Construction Contractors, there will be 1.28 million fewer construction workers by fiscal 2025 compared with fiscal 2014.