From the System Settings, look at the Applets icon. There are several that provide workspace indicators. One called Workspace Switcher puts a window icon (rectangular box) in the system tray for each workspace. It contains a visual representation of what's in that workspace and highlights the active one. Hovering on an icon displays the workspace name, so if you hover on the highlighted one, it will identify it (you can also tell from its position). You can use it switch between them. I believe it is installed by default.
In this screenshot, System Settings is open in Workspace 1. At the bottom of the shot is the system tray, with the three defined workspaces represented on the right of the image. The System Settings window (which is actually in the middle of the screen but the image is cropped), is represented by a white rectangle in the Workspace 1 icon, which is highlighted by a white border.
From the System Settings, Workspaces icon, there is a switch to Enable Workspace OSD (On-Screen Display). If that is on, it will briefly display the workspace name when you switch.
Back on the Applets icon, the Available Applets tab contains a couple of others that you can load. One called Workspace Name looks similar to your example.