Utilize the input text as a context reference, choose the right relationship between 'Jamie Dimon' and 'JPMorgan Chase' from the options.
Options: currency, product/material produced, operator, employer

JPMorgan Chase & Co. Chief Executive Officer Jamie Dimon is among bankers who’ve raised concerns that there’s a lack of liquidity in Treasury markets and that what happened in October should serve as a “warning shot” to investors.
employer