After his study he worked and trained at Oudt Leyden, Parkheuvel (one year under Cees Helder) and Vreugd en Rust (18 months under Henk Savelberg).

This restaurant was later moved to Rijswijk and changed its name to Paul van Waarden.

[6] The restaurant closed down unexpectedly on 21 March 2013, to avoid formal bankruptcy.

[7] In 2009, Van Waarden, together with his business partner René Michielsen, opened Restaurant At Sea in Scheveningen.

[9] In 2012, Van Waarden in cooperation with Henk Au and John Chau and with business partner Paul Corten, opened De Keuken Van Waarden Azië in Rijswijk.