Jobseekers face temporary benefits bans if they refuse to take some forms of zero-hours contracts under the coalition Government's welfare reforms.
Claimants risk losing payments for more than three months if they fail to accept certain positions on such terms as part of the new universal credit system.
Employment minister Esther McVey outlined the change in a letter to Labour MP Sheila Gilmore in an exchange about benefits sanctions, according to the Guardian.
Jobcentre "coaches" will be able to "mandate to zero-hours contracts" if they consider the role is suitable for a claimant, it added.
Ms Gilmore told the Guardian: "While I don't object to the principle of either universal credit or zero-hours contracts, I am concerned about this policy change.
"I also fear that if people are required to take jobs with zero-hours contracts, they could be prevented from taking training courses or applying for other jobs that might lead to more stable and sustainable employment in the long term."
Last week unions called for action against zero-hours working after a study showed about 1.4 million jobs involve contracts that do not guarantee a minimum number of hours.
A study among employers showed that 13% used non-guaranteed hours contracts, rising to almost half in the tourism, catering and food sectors.
More than one in five employers in health and social work reported using them, but they were relatively rare in financial, manufacturing, energy and agricultural services.
A Department for Work and Pensions spokesman said: "With Universal Credit, claimants will not be required to sign up to exclusive zero hours contracts. As now, if there's a good reason someone can't just take a particular job they won't be sanctioned.
"But it is right that people do everything they can to find work and that we support them to build up their working hours and earnings. The average zero hours contract provides workers with 25 hours of work a week - and can lead to long-term opportunities.
"Universal Credit payments will adjust automatically depending on the hours a person works to ensure that people whose hours may change are financially supported and do not face the hassle and bureaucracy of switching their benefit claims."