Calling him up x calling to him?

Hi folks, how are you doing?

I need a little help here!

Earlier, When I was praticing my English, I had a doubt with a sentence.

"My father is a pumbler, he is always working. People are always calling him up for some job"

Is it wrong? Or I could also use this form: "people are always calling to him for some job".

Could you help me, please?

Thank you all!