by the hour

by the hour

at each hour; once each hour. It kept growing darker by the hour. I have to take this medicine by the hour.
See also: hour
References in periodicals archive ?
Even if they don't publicly object to the deal you've cut, they're going to go nuts when they figure out that you're getting paid by the hour.
Accounting for use of personal or sick leave time by the hour.
But because most drivers are paid by the mile rather than by the hour, expenses wouldn't be affected.
For anyone who bills or earns by the hour, the world can turn into a 24-hour clock divided not by numbers, but dollar signs.
DeVoe found that people who are used to being paid by the hour start thinking of time as a commodity almost equal to cash.
They found that only employees who are not paid by the hour use different mental accounting standards for time than they do for money.
Being paid by the hour causes people to endorse the idea that they'd rather make more money and spend more time at work," says Pfeffer, the Thomas D.
Once you're paid by the hour," he says, "you start placing a monetary value on that hour.
Sure enough, those who punched a time clock or billed by the hour were more likely than salaried folk to answer similarly for both time and money issues.