Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: 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.

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.

Answer: employer: Brian Hartzer, Westpac