It is necessary to ensure that Objective 4 strengthens employment and job qualifications through anticipation, counselling, networking and training operations throughout the Community and that it must therefore be horizontal, covering the economy as a whole, without a priori reference to specific industries or sectors, be aimed at workers of either sex in employment, particularly those threatened with unemployment, and not at undertakings, and at improving their qualifications and employment opportunities, be targeted as far as the type of operations is concerned, with due regard to the rules of competition, and complement, not replace, efforts that firms undertake themselves.