Refer to the input text as context and select the correct relationship between 'Brian Hartzer' and 'Westpac' from the available options.
Options: employer, owner of, distributed by, product/material produced

There have been some excellent recent examples of this including the following appointments: Brian Hartzer at Westpac Banking Corp, Jon Sutton at Bank of Queensland, Ryan Stokes at Seven Group Holdings, Peter Tonagh at News Corp Australia and Chris Smith at CSL.
employer