Another great selling point for WordPress is that it can have multiple users and also multiple user roles.
In most cases myself and the client have Administrative User Accounts. This means we have total control over the site.
If you want to let your staff add content to the site, we can set them up with their own user accounts with the appropriate priviledges. For example, they may be allowed to login, write content, and publish content but the content needs to be approved by an administrator before it goes live. There are lots of possibilities where WordPress is concerned.