To promote environmental sustainability, older persons recycle used banners (made of synthetic materials, and commonly found in the streets of the the Republic of Korea to announce events or for advertisement) to make re-usable shopping bags, burlap bags, farming clothes, etc, and sell them at the local market. This business model requires investment at the set-up stage only, and then it becomes financially self-sufficient, as the raw material (used banners) is free.
"Effective Micro-organism" or "EM" refers to 80 kinds of micro-organisms that are known for their effectiveness in cleaning water, preventing rust, and decomposing organic matters. Since 2012, older persons are hired to spray "EM water" inside toilets and faucets inside public organizations, schools, shopping street, etc, three times a week. The regional government receives requests from around 170 public buildings in Incheon City and assigns older persons to work in the buildings.