Home2003 Treaties and Agreements ...Netherlands (03-501) – Agreement on Social Security with Protocols hide Netherlands (03-501) – Agreement on Social Security with Protocols TIAS Office of Treaty Affairs May 1, 2003 Social Security Agreement signed at The Hague December 8, 1987; entered into force November 1, 1990. With administrative arrangement. Protocol signed at The Hague December 7, 1989; entered into force November 1, 1990. Second protocol signed at The Hague August 30, 2001; entered into force May 1, 2003. Download Attachment [2 MB] Tags Netherlands Social Security Treaties