Harbhajan Singh Khalsa arrangement for thousands of refugee students – and led the Sikh Students Federation in Delhi. Four years later, he graduated with a master's degree in Economics. In 1953, Harbhajan Singh entered the Indian Civil Service. He served in the Revenue Department, where his duties took him all over India. Eventually, Harbhajan Singh was promoted to the post of customs inspector for the country's largest airport, outside Delhi. He married Inderjit Kaur Uppal in Delhi in 1954. Together, they had three children, Ranbir Singh Bhai, Kulbir Singh and Kamaljit Kaur. Throughout his life, Harbhajan Singh continued his practice and pursuit of
Harbhajan Singh at the age of 15 years and 9 months for a youth One Day International against South Africa. He took 1/19 from seven overs in an Indian win. In 1996–97, Harbhajan was promoted to the Punjab Under-19s and he took 15 wickets at 20.20 in three matches, although he managed only two runs with the bat. This included match figures of 8/54 in an innings win over Jammu and Kashmir. Harbhajan made his first-class cricket debut in late 1997 against Services, during the 1997–98 Ranji Trophy season. He took a total of 3/35 in an innings win but was dropped