The Government said jobcentre staff will work with 12 to 18-year-olds in England to help them plan a career, giving advice on writing a CV, interviews and how to obtain an apprenticeship.
The announcement, made ahead of new unemployment figures, extends a trial started earlier this year in areas including Birmingham, Lancashire, Yorkshire and London.
Employment minister Damian Hinds said: "When I speak to employers about taking on young people I hear the same message time and time again - that qualifications are important, but they need people who can work well as part of a team, talk confidently and adapt to new situations.
"These 'soft skills' are hugely important to employers and yet many young people struggle to develop them.
"I believe passionately that our young people must get the best start in life, and that's why we are putting rocket boosters under our efforts to help young people plan for a successful career."