[4] Yussuff's presidency was characterized by a rift among the leadership of the CLC between NDP-loyalists and those who favoured widening the support to include the Liberal Party where appropriate.

He was given a special membership by one of the affiliates to permit him to carry out the remainder of his term, and on June 18, 2021, Yussuff retired from office, and was replaced by Bea Bruske.

The CLC commissioned several studies and pushed for an expansion of the Canada Pension Plan (CPP) and an introduction of Pharmacare, a public single-payer insurance system for medications.

[14][15] Several years later, the government announced similar plans to implement dental care coverage on a means-tested basis and to phase-in pharmacare in the near future.

[21] In 2021, Yussuff co-wrote an op-ed with Perrin Beatty, CEO of the Canadian Chamber of Commerce, in support of the Canada Emergency Wage Subsidy for the Financial Post.

[22] Yussuff is married to Jenny Ahn, who works as the Executive Director for Ontario Confederation of University Faculty Associations,[23] with whom he has a daughter.