Personal tales of tragedy will be heard when the robodebt royal commission resumes for its second block of hearings.

As the hearings shift to focus on what impact the illegal scheme had on individuals, personal case study witnesses will this week give evidence of what it did to them.

Robodebt was initiated under the former Liberal-National government and falsely accused welfare recipients of owing money.

Automated debt notices were issued by a process called income averaging, which compared people’s reported income with tax office figures.

The commission is investigating how the scheme, which operated between 2015 and 2020, went ahead despite government departments knowing the debt calculation method was unlawful.

Jason McNamara, who worked in the debt division for Services Australia throughout the scheme, will present evidence on Monday while former Human Services secretary Kathryn Campbell will be questioned on Wednesday.

The hearings will roll on next week when former prime minister Scott Morrison fronts the commission on December 14. he was social services minister and treasurer at the time the robodebt scheme was in operation.

Previous sessions have heard Mr Morrison may not have been told about legal advice that should have stopped the scheme from going ahead.

-AAP