The phrase "off-office hours" is correct and usable in written English. You can use it when talking about a time outside of normal working hours. For example: "We will have to wait until off-office hours before the internet is available.".
These results may have practical implications for the organization of the emergency departments during off-office hours and may suggest that specific educational programs for the management of fever in infants are needed in the US.
By improving walls and windows, reducing window-to-wall ratios, introducing demand-controlled ventilation and lighting, allowing a larger range in temperature and installing more efficient equipment which are completely turned off outside office hours, the heating energy, cooling energy and electricity use can decrease significantly.
There is a risk that hoping to land lucrative private clients, you would slack off during office hours.
The speakers on the phones were essentially made to act like microphones that would try to sense unusual noises during off-peak office hours.
Among infants born to mothers referred to a hospital during labour, differences were observed in the prevalence of a low Apgar score, and the composite measure within the time categorizations off-hours vs. office hours, and time of the day, but not for day of the week.
Among infants born to mothers referred to a hospital before the onset of labour, differences were observed in the prevalence of all three adverse outcomes among all three time categorizations (off-hours vs. office hours; day of the week; time of the day).
Okay, I confess: I downloaded that joke off the net during office hours.
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Claudia Letizia
Head Translator and Proofreader @ organictranslations.eu