> For the complete documentation index, see [llms.txt](https://docs.zipwire.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zipwire.io/zipwire-approve/unboxing-key-concepts/senders.md).

# Senders

We refer to anyone who sends timesheets as a sender. Typically this is the contract worker, freelancer or temporary worker. They may work for one or more **Clients** or may work directly within the very workplace that's using Zipwire. Sometimes, a sender may also be an **Approver**.