[af-ter-ouuh
rz, -ou-erz, ahf-] 
| occurring, engaged in, or operating after the normal or legal closing time for business: an after-hours drinking club. |
after hours
After normal working hours, after closing time; also, after legal or established opening hours. For example, I haven't time while the shop is open, but I can see you after hours, or The restaurant employees sometimes stayed for a meal after hours. This term originally referred to laws governing business hours. It also gave rise to the term after-hours club, for a drinking club that remained open later than similar establishments. [Mid-1800s]