We can use all these forms:
to talk about the present:
London is the capital of Britain.
He works at McDonald’s.
He is working at McDonald's.
He has worked there for three months now.
He has been working there for three months now.
to talk about the future:
The next train leaves this evening at 17.00.
I'll phone you when I get home.
He is meeting Peter in town this afternoon.
I'll come home as soon as I have finished work.
You will be tired out after you have been working all night.
Present Tenses
Simple
I work
Continuous
I am working
Perfect
I have worked
Perfect continuous
I've been working