You can invite people to your workplace by sending them the website address of your workplace profile page or by clicking on the 'invite co-workers' button on the right-hand side of your Workplace Profile.

Note: the 'Invite co-workers button will open up your mailing app. If you do not have a mailing app installed, you can send the direct hyperlink to your Workplace profile instead (just copy and paste it from the address bar when you are on your Workplace Profile Page).