Refer to the input text as context and select the correct relationship between 'Brian Hartzer' and 'Westpac' from the available options.
Options: chief executive officer, owner of, employer, stock exchange

Louie Douvis Share on twitter by James Eyers Westpac Banking Corp's chief executive Brian Hartzer has been urged to set out a plan for cost reductions at the bank's strategy update on Monday, including reducing the number of branches, which has been inflated since the acquisition of St George during the financial crisis.
employer