Every man, they said, ought to be able to understand the law and act on his own behalf.

It was as if I couldn't act on my own behalf.

But sometimes individual family members act on their own behalf.

However, as members ourselves, we would be willing to act on your behalf.

The Consortium might find another party to act on its behalf.

Did he ask me if I'd mind him acting on my behalf?

You can use a sales agent to act on your behalf.

The man doesn't have any relatives, so who is there to act on his behalf?

A. I'm saying they were acting clearly on his behalf.

These people represent the company, and act on its behalf.