He was the first wheelchair user in Sri Lanka to become a lawyer and the first elected politician with a disability. He is one of the few politicians with a disability in the world to be elected into a legislative body with no merit given based on disability and contesting alongside non-disabled candidates. He is also the first person with a disability to hold ministerial portfolios in Sri Lanka and the first person with a disability to be appointed an acting chief minister. Senarath has represented Sri Lanka in may international forums and as a leader from the global south at the United Nations on three occasions. He conceptualised the concept of a Disable and Age Friendly City, and has implemented in Moneragala, the district he represents with the support of a wide number of stakeholders.