The Spanish legislation transposing the European Directive provides that:
‘For the purposes of the present law, ‘‘collective redundancy’’ shall mean the termination of employment contracts on economic, technical, organisational or production grounds where, over a period of 90 days, the termination affects at least:
(a) 10 workers in undertakings employing fewer than 100 workers;
(b) 10% of the number of workers in an undertaking employing between 100 and 300 workers;
(c) 30 workers in undertakings employing more than 300 workers.’