After graduation, Gaur joined the state government's irrigation department as a junior engineer. In 1958 he was suspended on charges of corruption, subsequently he started his own venture as a civil contractor and two decades later, laid the foundation for the Jaypee Group by setting up Jaiprakash Associates, a civil engineering and construction company. To leave a secure government job and pursue contractorship in 1958, when it was considered to be most prestigious, required courage. He was known to gift the engineer who had suspended him a car on Diwali as an appreciation gesture. In 1967, the same man led and transformed a motley group of persons into a company which took pride in its cable address "Iron Will" and went on to execute:
Doctor of Science by Bundelkhand University in the year 1997, in recognition of his distinguished contribution in the field of Engineering and Technology.
"Distinguished Alumni Award" by Indian Institute of Technology Roorkee (erstwhile University of Roorkee) in the year 2005, in recognition of his contribution in the field of corporate development/Administration/Entrepreneurship.
Doctor of Science (Honoris Causa) by Rajiv Gandhi Proudyogiki Vishavidyalaya (University of Technology of Madhya Pradesh) in the year 2005, in recognition of his distinguished contribution in the field of Technical Sciences.
"Lifetime Achievement Award" by Builders' Association of India, in recognition of his outstanding contribution to Indian Construction Industry in 2005.
"Udyog Ratna Award" by PHD Chamber of Commerce & Industry, in recognition of his contribution to Economic Development of the Madhya Pradesh, Jammu & Kashmir & Uttaranchal States.
“Entrepreneur of Year Award”, for his exceptional contribution in the Infrastructure & Construction sector by Ernst & Young in 2008.
Bestowed with the Highest Civilian Honour of Bhutan (DRUK KHORLO) by the King of Bhutan. This is the Highest Civilian Honour given to any civilian and person of foreign origin and also happens to be the First Award given by the 5th King to a civilian, apart from our Honorable Prime Minister, Shri Manmohan Singh.
Infrastructure Leader of the Year award, conferred to Shri Jaiprakash Gaur, Founder Chairman by Shri Kamal Nath, the Union Minister of Road Transport and Highways during the Essar Steel ‘Infrastructure Excellence Awards 2010’ in association with E18 and CNBC TV18.
"Lifetime Achievement Award" by Merchants’ Chamber of Uttar Pradesh, Kanpur, for creating new milestones in infrastructure development and for his achievement in Corporate Social Responsibility for the year 2010.