Pornsak Bowornsrisuk sits on a bench while managing at a bus terminal in downtown Bangkok, Thailand, February 3, 2016. Pornsak Bowornsrisuk pulls an umbrella towards him to shield his head of thick grey hair from the blazing sunshine at the Bangkok bus terminal he manages. "You've got to be damned tough to do this job," says the 63-year-old, who records bus arrivals and departures, and tots up fares collected from journeys across Thailand's capital. Such scenes will only become more common in Thailand as its population rapidly ages, unlike its neighbours with more youthful populations. The World Bank estimates the working-age population will shrink by 11 percent by 2040, the fastest contraction among Southeast Asia's developing countries. Picture taken February 3, 2016. REUTERS/Jorge Silva TPX IMAGES OF THE DAY