on the clock

• It was six o'clock on the clock. His own watch had stopped.1922, D. H. Lawrence, “The Horse Dealer's Daughter,”, in England, My England:

• Near-synonym: on the job
• I discovered after my arrival that I wouldn't be able to start working for six weeks. . . . The Beverley Hills Post Office finally worked my status out with the Chicago Post Office. I was back on the clock.1983, Odie Hawkins, Scars and Memories, →ISBN, pages 97–98:

• Money earmarked for services and repairs often found its way to payroll, to put yet more unskilled workers on the clock.1997 August 18, Tamala Edwards, James Carney, “Disaster on the Potomac: How not to run a city”, in Time:
• The board authorized the Building Department to schedule Saturday inspections for water line installations as a service to residents and businesses. It requires inspections to be done "on the clock" and in a town vehicle.2007 August 28, Kristin Shaw, “More work means more pay”, in The Independent, US, retrieved 20 Apr 2009:

• If a fare paid him no more than what was on the clock, he'd shout out: "If you can't afford cabs you should take the 'bus."1971, Barry Pain, “Mrs. Murphy”, in Humorous stories, →ISBN, page 90:
• Significant monies are wasted each week as bankers leave taxis outside, waiting on the clock, while they finish their lunches.2005 April 22, “Cost Controls, Fine—But THAT'S Ridiculous”, in hereisthecity.com, UK, retrieved 20 Apr 2009:

• With only three seconds on the clock and the Knicks about to win, 102-96, in their playoff opener against the Philadelphia 76ers at Madison Square Garden last night, Rick Pitino enjoyed the moment.1989 April 28, Dave Anderson, “Sports of the Times: Jackson Hits 'Biggest Shot Of My Life'”, in New York Times, retrieved 20 Apr 2009:

• There were 26 minutes on the clock before Scotland had their first real opportunity.2007 August 22, “Scotland 1-0 South Africa: Boyd saves blushes”, in ESPN, retrieved 20 Apr 2009:

Chiefly sports drafts

• The obvious advantages of this method of new motor vehicle delivery over long distances,, which the L.M.R. says dealers and ultimate customers are beginning to appreciate, are all-weather reliability, arrival in mint condition and with only a very small mileage "on the clock", and the assurance that the car has not been mishandled during its running-in period; [...].1962 October, “Talking of Trains: L.M.R. car-carrying success”, in Modern Railways, page 224:
• And with 112,000 miles on the clock this isn't scary mileage for this type of car.2008 November 19, “A grand way to keep travelling”, in Irish Times, retrieved 20 Apr 2009:

• Alas, the delivery boy is on the clock; he could and would work much faster on commission!