What is the relationship between Brian Hartzer and Westpac in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Indeed, Westpac chief executive Brian Hartzer made it clear on Wednesday that the bank will still look to increase its dividend and will stick to the overall return on equity (ROE) target of 15 per cent.

Answer: employer