Some current recipients of the Personal Independence Payment (PIP) are likely to lose out under a planned overhaul of the welfare system, which is expected to tighten eligibility criteria.
Work and Pensions Secretary Liz Kendall will set out how the government intends to reform the health benefits system on Tuesday afternoon, in a move aimed at cutting the growing welfare bill.
Her package of reforms is expected to include more help and support for finding work, and the protection of payments to the most vulnerable.
But the move has faced opposition from within Labour ranks over concern for the potential impact on vulnerable claimants.