The word "behalf" is correct and perfectly usable in written English.
You can use it when you want to refer to an action done as a favor for someone else. For example: "I attended the meeting on behalf of my boss."
A statement released on behalf of his family said: "It is with great sadness and an enormous sense of shock that we announce the death of Charles Kennedy.
"I've read a series of glowing references on behalf of every one of you.
The head of an alleged New South Wales Liberal party slush fund receiving regular payments from Australian Water Holdings (AWH) was involved in drafting letters, press releases and parliamentary questions on behalf of senior Liberals aimed at boosting the water company's interests.
O'Farrell's former chief of staff, Peter McConnell, also gave advice to Koelma on drafting letters on behalf of O'Farrell in support of AWH.
Shah chairs a mental health charity and is well known locally in Bradford for campaigning on behalf of her mother, who was released from prison in 2000 after serving 14 years for putting poison into the food of Mohammed Azam, a local drug dealer who she feared was planning to sexually abuse her daughters.
"There has been nothing proven against the APY board, there has been no natural justice, no procedural fairness, no compartmentalisation of any allegations," said Sansbury on behalf of the group and approved by APY.
The forum's website carries photographs of Hockey and says: "On behalf of Joe Hockey I encourage you to join the North Sydney Forum and to offer your practical support to Joe Hockey".
Steve Brickell, the police coroner's officer, said: "On behalf of the coroner we are investigating this woman's death and I am keen to speak to witnesses to the incident and more importantly the cyclist involved.
After all, conflict and power-plays are ultimately about people, not about the weapons that act on our behalf.
Only their most fanatical followers would make any claim to merit on behalf of a winning team who were clearly second-best in everything except the matter of producing a legitimate goal.
"On behalf of the Australian government I acknowledge the passing of Neville Wran AC CNZM QC," the prime minister said on Monday.
