St. Thomas Hospital and St. Theresa of Child Jesus School of Nursing actively participated in clean plast which was organised to clean the surroundings of Chembarabakkam Lake from plastic and other debris which pollutes the water that is being supplied from lake to various part of metro city. St. Thomas Hospital staff’s and sisters actively participate in social service programs by stealing time out of the hectic schedule of healthcare work.

St. Thomas Hospital organises benevolent activities for poor lepers before every Christmas, more than 300 lepers visit the hospital every year to receive the gifts given for Christmas and join in the prayers held for them.