Rachel Reeves is expected to unveil pension reforms this week which are intended to channel money into infrastructure and private businesses.
The Chancellor is also expected to use her first Mansion House speech in the City of London to 鈥渟pell out the next phase鈥 of Labour鈥檚 plan in Government, after her key pledge in October鈥檚 Budget to 鈥渇ix the foundations鈥 of the economy.
Her speech on Thursday will come against a backdrop of criticism from the hospitality sector, including signatories to a letter organised by UKHospitality who warned that changes to employers鈥 national insurance contributions could lead to job losses.
Launching her pension changes, which Treasury sources have said could unlock billions of pounds for critical infrastructure and businesses, Ms Reeves will pitch 鈥済rowth brought by unlocking private sector investment, including in our financial services industry, and growth brought about by reform 鈥 both of our economy and of our public services鈥.
The Chancellor is also expected to highlight 鈥渢he untapped potential we have here in Britain, the opportunities available that can be realised, the partnerships that can be forged, the wealth that can be created鈥 as 鈥渢he prize on offer鈥.
This could include partnerships with economies in Europe, the Middle East, Asia and the US, the PA news agency understands.
At last month鈥檚 Budget, Ms Reeves unveiled a change to the amount employers pay in national insurance contributions (NICs), expected to raise more than 拢25 billion for the Treasury.
As well as an increase in the rate employers pay from 13.8% to 15%, the threshold at which employers start paying the tax will be reduced from 拢9,100 per year to 拢5,000.
But in a letter on Sunday, 14 UKHospitality board members and a further 209 businesses, including JD Wetherspoon, IHG Hotels and Resorts and restaurant chain Tortilla, have warned that 鈥渃hanges to the NICs threshold are not just unsustainable for our businesses, they are regressive in their impact on lower earners and will impact flexible working practices which many older workers and parents rely upon鈥.
They continued: 鈥淯nquestionably they will lead to business closures and job losses within a year.
鈥淭he threshold change brings many team members into employer NICs for the first time. We estimate the threshold change may be four times the cost of the new headline rate.
鈥淚nstead, many businesses would have to reconsider investment and drastically cut jobs and reduce the hours of team members.鈥
The letter read: 鈥淲e know you are determined to ensure that growth is available to all.
鈥淵et this change to NICs does the opposite, balancing the books on the backs of the businesses which provide jobs to all in society, nationwide, while sparing businesses that used technology to shed jobs.鈥
They have suggested Ms Reeves rolls out a new NICs band between the new 拢5,000 and old 拢9,100 thresholds 鈥 with a lower 5% rate 鈥 or an exemption for lower band taxpayers who work fewer than 20 hours per week, to support workers in part-time and lower paid roles.
The concerns from the hospitality industry come after retailers also raised questions about the impact of the NICs rises last week.
Asked about complaints from businesses such as retailers about the changes to NICs, Treasury minister Darren Jones told the BBC: 鈥淚 think the public would recognise that bigger businesses are more able to burden some of the contributions that we need to make to the state and actually getting the NHS back on its feet so workers who are off sick can get back to work is probably something that retailers will benefit from as well as all the other measures that we鈥檝e put forward in the Budget.鈥
Asked if that means it is 鈥渢ough鈥 for big businesses, Mr Jones said: 鈥淭here are measures more broadly in the Budget which we think are good for business, good for growth and good for the economy, but on tax contributions, yes it鈥檚 been designed in that way.鈥