# Worker package The **`worker` package** is a Go package that provides utilities for handling long-lived Go workers. In Juju, it provides [the worker interface](https://documentation.ubuntu.com/juju/3.6/contributor/reference/worker-interface.md#worker-interface) that is used to define all workers, and [the dependency package](https://documentation.ubuntu.com/juju/3.6/contributor/reference/dependency-package.md#dependency-package) and [the catacomb package](https://documentation.ubuntu.com/juju/3.6/contributor/reference/catacomb-package.md#catacomb-package) package. > See more: [Go packages | `worker`](https://pkg.go.dev/github.com/juju/worker), [Go packages | `worker` > > `worker.go` (worker interface)](https://pkg.go.dev/github.com/juju/worker#Worker)