unsociable hours

If someone works unsocial hours, they work late at night, early in the morning, at weekends, or on public holidays. In Britain, people are often paid extra for working unsocial hours.

ساعاتی غیر از زمان کار عادی

منظورش ساعات غیر اداری هست مثل عصرها، شبا، آخر هفته ها. . .