Ключевые слова: 1st may, 3d illustration, background, banner, builder, business, celebration, concept, construction, construction helmet, copy space, creative, design, employment, engineer, equipment, freedom, graphic, hammer, happy labour day, holiday, industrial, industry, international, international labor day, job, labor, labour, labour day, may, metal, national, occupation, poster, profession, professional, text space, work, worker, workers day, world,