all hours

all hours (of the day and night)

1. A very late hour of the night or very early hour of the morning. You can't call her at all hours of the day and night—that's just rude. Johnny keeps taking the car and staying out till all hours, and I just don't know what to do anymore!
2. All day and night. Is that pharmacy open all hours? I know it's 2 AM, but I just got out of the ER and need to fill a prescription.
See also: all, and, hour

*all hours (of the day and night)

Fig. very late in the night or very early in the morning. (*Typically: until ~; till ~; at ~.) Why do you always stay out until all hours of the day and night? I like to stay out till all hours.
See also: all, hour

all hours

Irregular times, as in You can't come home at all hours and expect your supper to be ready. The expression can also mean "late at night," as in College students like to stay up talking until all hours. It is sometimes amplified into all hours of the day and night. [c. 1930]
See also: all, hour
References in classic literature ?
One sees so many students abroad at all hours, that he presently begins to wonder if they ever have any working-hours.
For most employers, a covered employee must be paid overtime for all hours over 40 worked in a given week.
Under this method, the employee must be paid a salary designed to compensate the employee for all hours worked, and the employee must work a fluctuating number of hours of overtime every week.
Be sure employees are being paid for all hours worked, even before and after scheduled shifts, during scheduled breaks or meal periods, and while attending staff meetings or mandatory training sessions.
Nonexempt employees must be paid overtime for all hours worked in excess of 40 hours in a workweek (or, if in California or other similar states, after 8 or 12 hours in a workday), even if the work is performed in more than one department or position.
3 Consequently, the average hours at work as a percent of all hours paid per employee rose.
The West Hills resident trades online and at all hours of the day - and night - because he needs to be at his job at KCRW-FM in Santa Monica by 3 a.
Of course, most long-term care facilities can take advantage of Section 7(j) of the FLSA, which allows them to base overtime compensation on work in excess of eighty hours in a fourteen day period, provided they also pay overtime for all hours worked in excess of eight in any given day.