PO/PR not getting approved by manager defined as contingent worker

Summary:

The Purchase Order/Purchase Requisition / BPA is not getting approved by manager having approval authority but defined as contingent worker

Content (required):

The approval rule is based on cost center manager and Job Level.

The new head of procurement is joined as contingent worker. He has assigned Job level 30, which has 100k approval limit. But, the Purchase Order/Purchase Requisition / BPA is not getting approved at his level and route to next level after his approval even if the document value is less than 100k.

Is any configuration is missing or contingent worker can't approval Purchase Order/Purchase Requisition / BPA. I re-checked all the configuration and attaching the employee record with this email.