In his speech, Corbyn accused Johnson of symbolizing the "born-to-rule establishment" and wealthy individuals who "hoard the prosperity and dodge their taxes".
After calling for a general election for two years, it is thought that the Labour leader would struggle to justify further votes against an early poll - particularly without the reason now being given, which is that Johnson could change the date of the election and have it take place after no deal.
Boris Johnson sought to shore up support for his Brexit ambitions by welcoming the DUP to Downing Street, amid Labour claims that a general election "is coming".
Mr Corbyn threatened to "unleash the biggest people-powered campaign we've ever seen", when addressing union members.
A law drafted by Opposition figures demanding the Brexit deadline is extended to January 2020 to avoid Britain leaving the European Union without a deal is expected to receive Royal Assent this week.More news: Wendy's To Start Serving Breakfast in the Hudson Valley in 2020
"Only Boris Johnson and the Conservatives will deliver Brexit by 31 October, no ifs or buts, so we can move on and focus on the issues that matter to people", said its party chair James Cleverly.
Mr Corbyn has said while an incoming Labour government would hold a new referendum - with Remain and a "credible" option for Leave on the ballot paper - he has yet to say which he would support.
Tories are hijacking the referendum result to help "the rich".
"The policy is clear - if it is a bad Tory deal then Labour will formally back remain".
Mr Corbyn's comments came as a cross-party groups of MPs said there was still time to pass a Brexit deal in Parliament with a "sizeable voice building across the House" to be given the opportunity to achieve it. "Just as we worked throughout the summer to pass a law preventing no deal, so we will work each and every day we are shut down to enforce that law. And I think that's unbelievable, that decent people who have devoted their entire lives to mainstream politics are being driven out by this culture of extremism and in some cases, anti-semitism.I have to be honest and the truth is that I have become ashamed of the Labour Party under Jeremy Corbyn". He often misses shadow cabinet these days.More news: Xiaomi unveils 30W wireless charging technology Report
Pro-Remain Labour activists are also hoping the party's conference later this month will commit the leadership to backing Remain under all circumstances.
But we do not have the luxury of acclaiming or lamenting the Labour leadership's decisions from the sidelines.
He also accused the PM of cosying up to President Donald Trump to get a "one-sided" trade deal with the United States which would damage employment rights, the NHS and UK industry.
Labour's Brexit policy has shifted in a series of incremental steps over the past 12 months, from a referendum being one option "on the table", to its preferred route out of the deadlock in parliament.
A trade union source said: "The union frustration with John McDonnell, Emily Thornberry etc was mainly about timing". "A general election might well fail to solve this Brexit chaos".More news: USA joins Israel in accusing Iran as nuclear deal flounders
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