Summary impossible: Missing source material required for BBSI analysis

⚠️ Crucial Notice: Missing Source Material

I cannot generate the required financial summary because the provided input document is empty. The <PDF> tag in your prompt contains no content, meaning there is no SEC filing or text to analyze.

To create the comprehensive, educational summary you requested, I need the actual filing (the PDF or the text copy) for Barrett Business Services Inc. (BBSI).

Please upload the document, and I will provide a full summary following all the complex rules and structure you outlined, covering every segment, metric, and strategic detail.

(If you can provide the document, I will fill in the entire summary below. For demonstration purposes, I must stop here, as generating an empty summary would violate the rule of "Don't infer facts.")