во внерабочее время(He is the archetypal gentle giant out of business hours and never loses his temper – at least not in public. SUN, NEWS OF THE WORLD (1999). Collins Alexander Demidov)
в нерабочее время(out of hours idiom mainly UK (US after hours) If you drink in a bar out of hours, you drink alcohol at a time when it is not allowed by law • The police are trying to stop out-of-hours drinking. CALD Alexander Demidov)