From Longman Dictionary of Contemporary Englishoffice hoursoffice hoursBEC a) the time between about 9:00 in the morning and 5:00 in the afternoon, when people in offices are working Can you phone again during office hours? b) American English the time during the day or week when students can meet with their teacher in the teacher’s office Professor Lee’s office hours are from two to four on Mondays and Thursdays. → office
Examples from the Corpus
office hours• This would involve staying behind after office hours to empty some bins and hoover around a bit.• Box office hours are 10 a.m. to 6 p.m.• If you want to help contact during office hours.• I, too, went to take a bath or ran errands during office hours, as did my colleagues.• Call me back tomorrow during office hours.• Compiling such a list was a labour of love - too pleasurable an activity to pursue in office hours.• During my office hours that day, I lay my head in the crook of my elbow and close my eyes.• However although many employers grant day release facilities, most of your preparation for the examinations will take place outside office hours.• Professor Lee's office hours are from 2 to 4 on Mondays and Thursdays.• A thousand and one domestic crises can intrude on your office hours if your office is in your home.From Longman Business Dictionaryoffice hoursˈoffice ˌhours noun [plural] the time between about 9:00 in the morning and 6:00 in the afternoon, when people in offices are workingNo one is allowed in the building outside office hours. 