He played once for the Punjab A cricket team in January 1957, in the 1956/7 Quaid-e-Azam Trophy against Pakistan Railways, but failed to score a run in either innings.
He then played for Pakistan Railways in January 1960, in their 1959/60 Quaid-e-Azam Trophy quarter-final match against Lahore, making small scores.
His last two matches were played for Pakistan Railways against Hyderabad and Karachi Blues in January 1968 under the captaincy of Arif Butt.
Hayat officiated in 34 Tests from March 1980 to October 1996, and 55 One-day Internationals (ODI) from November 1978 to December 1996, mainly in Pakistan.
Hayat made his debut as an ODI umpire in the match between Pakistan and India at Zafar Ali Stadium in Sahiwal on 3 November 1978.
Having given every decision on behalf of Pakistan, and having ignored 4 wide balls above the bowlers head, India were forced to concede the match from a winning position.