During his visit to Worcester Housing and Benefit Advice Centre later, Mr Corbyn will say: “With real wages lower than they were 10 years ago, deep cuts to social security, rising borrowing just to make ends meet and the growth of insecure work, the Conservatives have created a perfect storm of low pay, insecurity and working poverty.
“This rising insecurity, with so many without savings to fall back on, is causing terrible stress for millions of families across the country.
“These scandalous levels of in-work poverty are unacceptable and must be brought to an end.
“Every job should provide dignity and security.”
Research by Labour shows the number of adults living in families where one or more person is working, and who do not have any savings, has risen to 12.8m.
The party says this was an increase of 2.5 million since 2010.
Labour’s 2017 manifesto promised to raise the minimum wage to £10 an hour by 2020.
But a Conservative spokesman said Mr Corbyn’s numbers “don’t add up”.
“It’s because of our National Living Wage that millions of hard working British people have seen a pay rise increasing their wage by £2,750, with the lowest paid seeing the biggest pay rise whilst over three million people have been helped into work,” he said.
“At the same time we’ve cut taxes for 32 million people, taking the lowest paid out of paying income tax altogether, and taken action to reduce the cost of living.”