おはようございますGood Morning in the evening time in workplace

We say おはようございます in the morning time. If family member, it will be casual forms as おはよう.

When you get started to work at your workplace in the morning time, of course you would say おはようございます to your colleagues…but if it is in the afternoon or evening time, would you say　こんにちは？ or こんばんは？

We actually say おはようございます to the people who you meet at the first time on that day in workplace regardless the time!

Originally おはようございますcontains a meaning of ‘ you arrived such an early, thanks for your hardworking’.