On your part of mijnloondossier.nl
you will see the documents that your employer or the administration office has
placed for you on that site:
In your 'Dossier' you will see the employee pay slips that the employer or the administration office has sent to mijn.loondossier.nl. Plus the files you you may have placed it yourself on mijn.loondossier.nl, such as a (scanned) ID. You will also see the documents that have been shared with you.
If you opt for a pay slip, your pay slip (pdf) will appear on the screen. This way you can of course open all your files and print them if necessary.