His maternal grandfather Sir Chhotu Ram was an iconic peasant leader in India and Pakistan.

[2] He graduated from Government College, Rohtak and completed his law degree at Panjab University, Chandigarh.

[3][4] His son Brijendra Singh ( politician, born 13 May 1972) was previously a bureaucrat who served as an IAS officer of 1998 Batch and was posted in Haryana for 21 years.

He contested the legislative assembly election in 1977 from Uchana Kalan constituency on Indian National Congress ticket and won the seat with a sizeable margin, despite a strong anti-congress wave in the country.

Birender Singh was elected as Member of Parliament (Lok Sabha) from Hisar Constituency, after defeating Om Prakash Chautala by a giant margin.

Birender Singh held the portfolio of Finance, Labour and Employment Ministry in Haryana from 2005 to 2009, also serving as Excise and Taxation Minister from 2007 to 2009.

In 2010, Birender Singh was elected as Congress' MP Rajya Sabha from Haryana for a 6 years term (2010–16) from which he resigned in 2014 before joining BJP.

During his term as Rajya Sabha MP from Congress, Birender Singh served as the chairman, Standing Committee of Parliament on Human Resource, Women & Child Development, Youth & Sports Ministry from Sept 2013 to April 2014.

[6] He resigned two years before the end of his tenure, after his son Brijendra Singh won from Hisar Loksabha Constituency in 2019 general elections.

In 2011, he was made the general secretary of AICC in charge of poll-bound states of Uttarakhand and Himachal Pradesh.

Birender Singh led the party to victory in Uttarakhand and Himachal Pradesh elections, which were fought under his guidance.