David Cameron will promise to put working people "front and centre of our economic plan" when he sets out a timetable for the first 100 days of a Conservative majority government.

On the first day of what Conservatives said would be a week devoted to the Tory economic message, the prime minister will say that legislation to ensure that no-one working 30 hours a week on the minimum wage has to pay income tax by 2020 will form the "centrepiece" of his first Queen's Speech after 7 May.

The Speech, scheduled for 27 May, will also include bills to strengthen protection for small businesses, create 3 million more apprenticeships, cut the benefit cap to £23,000, introduce work requirements for young benefit claimants and establish new powers to force "coasting" schools to accept new leadership.

A housing bill would give 1.3 million housing association tenants the chance to buy their homes at a discount and a childcare bill would double free childcare for three and four-year-olds to 30 hours a week.

Cameron said: "The first 100 days of a majority Conservative government will continue to put working people front and centre of our economic plan - offering security at every stage of life.

"For the last five years, our priority has been clearing up the mess left by Ed Miliband's Labour Party, and now our country is on the right track with 2 million more people in work.

For the next five years, we will turn our long-term economic plan into a plan for you and your family, cutting your tax bill, helping with childcare, creating more jobs, offering more young people the chance to own their own home, and guaranteeing security in retirement."