| K. C. Tyagi served as the General Secretary of the All India Yuva Janata Party from 1977 to 1980. |
| He was appointed as the Vice-President of Yuva Lok Dal in 1980 and held the role until 1984. |
| K. C. Tyagi worked as the Secretary of Lok Dal from 1984 to 1988. |
| In 1989, he became the Secretary of Janta Dal. |
| While serving in the 9th Lok Sabha, he was the Chairman of Central Warehousing Corporation, India. |
| He served as the Official Media Advisor to the former Prime Minister of India, Chaudhary Charan Singh. |
| In May 1990, he was named the Chairman of the Committee on Papers Laid on the Table. |
| He was a member of the Estimates Committee (India) from May 1, 1990, to August 19, 1990. |
| On December 28, 1989, he began work as a member of the House Committee. |
| K. C. Tyagi has been involved with the Indian Delegations to Youth Meets in Cuba, USSR, and Vietnam. |
| He ran for Lok Sabha as a JDU candidate in 1991 and again in 1996 but did not win. |
| In 2013, he was elected to the Rajya Sabha and served until 2016. |
| He was the Chief General Secretary and National Spokesperson of Janata Dal (United) until 2024. |
| K. C. Tyagi has held the position of Chairman of the Parliamentary Standing Committee on The Industry. |
| He resigned as the Janata Dal-United (JDU) national spokesperson in September 2024 for personal reasons. |
| He enjoys traveling and listening to music in his leisure time. |
| He is actively involved in the welfare of minorities, scheduled tribes, artisans, and weaker sections of society. |
