The move comes amidst the backdrop of the national recruitment crisis.
Reports into adult social care and children’s social care have found huge challenges in recruiting and retaining staff across the UK.
Gaps often have to be covered by agency staff, which puts additional pressure on already-stretched council budgets.
More than 60% of Sutton Council’s budget goes towards supporting those most in need.
The authority says social workers play a key role in working with children and adults to help them to feel safe and achieve their goals.