Travel costs are tax deductible if you receive insufficient or no reimbursement from your employer under the following conditions:
you use public transport to and from work with both addresses being in the Netherlands
you travel more than 10 km. one way
you have an openbaar vervoer verklaring – OV-verklaring (transportation provider declaration) or reisverklaring (from your employer) as proof that you have used public transport. Bear in mind that you should keep any paper/digital tickets that you have used to travel to and from work
If you have a personal OV chipkaart, you can find an overview of all your trips and the costs at the website of the OV chipcard. If you are unsure of what situation applies to you, visit the Belastingdienst (tax office) website for more information on where to apply for the openbaar vervoer verklaring or reisverklaring. This will depend on the ticket you use (Dutch only)
Please note that you cannot claim a deduction if the employer bought the tickets for you. If your travel expenses have partially been covered by your employer, you can only claim the part that has not been covered.
It is good to know that individual labour disputes in the private sector are generally dealt with by a single court judge. Individual labour disputes in the public sector are regulated by administrative law and dealt with by an administrative court. Labour law is an intricate and complex field subject to changes. It is advisable to consult legal professionals when issues or disputes arise.