Characterize the news's sentiment using the following options.
Options: positive, negative

Amazon.com Inc (NASDAQ:AMZN) workers at a Coventry warehouse will become the first in the UK to take part in a formal strike ballot, with the GMB union stating Coventry's staff is "making history". The company's reported offer of a rise of 35p per hour has sparked anger among hundreds of workers who will begin voting on whether to walk out.
negative