Use the word "behalf" when speaking for or doing something for another person. The word "behalf" is also used when important public statements are made. This word has a very formal tone, so it's commonly heard in speeches and at special occasions.
He's working on behalf of the government.
A statement was read on behalf of the entire family.
A spokesperson speaking on behalf of the company addressed the issue of workplace harassment.
The Governor thanked the members of the military on behalf of the state.
On behalf of the country, President Obama thanked the men and women who teach in the nation's public schools.
(Published on May 12, 2017)