Dorsey also went before the House Energy and Commerce committee as well.
Sanders has accused Amazon of "corporate welfare". The senator says hundreds of employees have written describing "terrible working conditions at Amazon warehouses and the low wages they are paid". "Thousands of Amazon workers have to rely on food stamps, Medicaid and public housing to survive".More news: U.S. police officer enters apartment thinking it’s hers, shoots dead neighbour
Jeff Bezos is the founder and chief executive of Amazon.
The bill would impose a 100% tax on corporations with 500 or more employees equal to the amount of money their employees receive in federal benefits such as food stamps or subsidised housing.
"Our legislation gives large, profitable employers a choice: Pay workers a living wage or pay for the public assistance programs their low-wage employees are forced to depend upon", Mr. Sanders of the proposal, which he co-sponsored with Rep. Ro Khanna, California Democrat.
Amazon called Sanders charges "inaccurate and misleading" in a response posted last week.More news: Priyanka Chopra, Nick Jonas’ fam-jam at the US Open
"Throughout the year on average, almost 90 percent of associates across the company's US fulfillment network are regular employees who receive full benefits", Lynch writes in an email.
Employees also receive a "block of unpaid time off to account for running late and they can use that time like a checking account, deducting when necessary for time out of work", Lynch writes.
But some economists said they anxious such measures may backfire by creating incentives for companies to avoid hiring workers who may be likely to collect federal benefits. "As I am sure you know, with my very strong support, the state legislature voted to raise the minimum wage to $15 an hour".
The senator has said the company's median pay is 9 percent less than the industry average at $28,446, and "well below" a livable wage.More news: Tiger Woods Takes the Lead at the BMW Championship