“5. The true test may, with brevity, be indicated once again. Where a worker or group of workers labours to produce goods or services and these goods or services are for the business of another, that other is, in fact, the employer. He has economic control over the workers' subsistence, skill, and continued employment. If he, for any reason, chokes off, the worker is, virtually, laid off. The presence of intermediate contractors with whom alone the workers have immediate or direct relationship ex contractu is of no consequence when, on lifting the veil or looking at the conspectus of factors governing employment, we discern the naked truth, though draped in different perfect paper arrangement, that the real employer is the Management, not the immediate contractor. Myriad devices, half-hidden in fold after fold of legal form depending on the degree of concealment needed, the type of industry, the local conditions and the like may be resorted to when labour