van het Kaar, R. H. (1999). Union membership rises, while largest union announces reorganisation. EIROnline: European industrial relations observatory on-line, nl9901122n(januari).
van het Kaar, R. H. (1999). Banking unions split, construction negotiations deadlocked. EIROnline: European industrial relations observatory on-line, nl9903130n(maart).
van het Kaar, R. H. (1999). Dispute between management and works council in Employment Service. EIROnline: European industrial relations observatory on-line, nl9903129n(maart).
van het Kaar, R. H. (1999). Civil service negotiations: three disputes and an agreement. EIROnline: European industrial relations observatory on-line, nl9904138n(april).
van het Kaar, R. H. (1999). New agreement follows action by local government officers. EIROnline: European industrial relations observatory on-line, nl9905142n(mei).
van het Kaar, R. H. (1999). Social partners respond to collapse of government. EIROnline: European industrial relations observatory on-line, nl9905141n(mei).
van het Kaar, R. H. (1999). Trade unions file for bankruptcy of company. EIROnline: European industrial relations observatory on-line, nl9906147n(juni).
van het Kaar, R. H. (1999). Employment termination requests decline. EIROnline: European industrial relations observatory on-line, nl9907152n(juli).
van het Kaar, R. H. (1999). Social partners react critically to cabinet's tax proposals. EIROnline: European industrial relations observatory on-line, nl9909162n(september).
van het Kaar, R. H. (1999). Supplement 366, onderdeel Wet op de ondernememingsraden. In Sociaal Zakboek (pp. 1-5). Kluwer.