As of WorkSimple 1.2.1, it now supports multiple languages.
To install new languages, simple download the files below, place in the langs directory of your WorkSimple install and rename with a .php file extension. For example, rename fr.lang_.php.txt to fr.lang.php.

To create your own language file...
Download a language file above (such as English) and fill in correspondingly in your language. You must also save the file in UTF-8 encoding, to allow accents and other alphabets to function.