上班
to go to work; to be on duty; to start work; to go to the office
商办
to consult and act upon; privately run; commercial
上半夜
first half of the night; time before midnight
上半年
first half (of a year)
上半晌
forenoon; morning; a.m.
上半叶
the first half (of a period)
上班族
office workers (as social group)
上班时间
time of going to work; the morning rush hour