Is there a workaround to capture labor cost as a commitment (on the project)?

Summary:

The client would like to capture labor costs as a commitment on the project.

Content (required):

Based on the available commitment options (Manage Project Units), requisitions, purchase orders, supplier invoices and other commitments are available. I understand that other commitments are for third-party procurement systems. Is there a workaround to include labor costs as a commitment on the project?

Version (include the version you are using, if applicable):

22D

Code Snippet (add any code snippets that support your topic, if applicable):