Refer to the input text as context and select the correct relationship between 'Brian Hartzer' and 'Westpac' from the available options.
Options: publisher, headquarters location, distributed by, employer

Brian Hartzer, Westpac chief executive Westpac chief executive Brian Hartzer said in a memo sent to the bank's staff on Friday that Disney is "one of the world's most loved brands and their Next Generation Experience program has set a new benchmark for how great service can be delivered in a digitally-enabled world".
employer