average salary of females divided by average salary of males which demonstrate wage rate discrimination which should be curbed out.
No information has been found in the sustainability report and the UK gender pay gap report is available, not global hence not considered and marked unknown.
https://www.americanexpress.com/content/dam/amex/uk/legal/UKGenderPayGapReport2017.pdf/UK%20Gender%20Pay%20Gap%20Report%202017.pdf
UK Gender pay gap report 2017, pg. 1
"Pay Gap: Difference between Men and Women
Hourly pay
Mean 15.2%
Median 19.1%"