Robinson said: “The council’s leadership has clearly failed over the past nine months.
“[Reform] promised to cut waste and cut taxes. When a clear failure has occurred you need to stand by your actions.
“The situation we face is grave, and I have no confidence in this leadership to enact it.”
Conservative group leader councillor Adam Kent said: “Reform were elected on promises to cut waste and reduce taxes, yet residents now face near-record council tax increases without a credible, costed recovery plan.
“Those who fail to plan, plan to fail – Worcestershire is now living that reality.”
Monk said: “If a notice of motion has been submitted in line with the council’s constitution, it may be debated at the next council meeting so I won’t be commenting at this stage.”