Ключевые слова: 1st may, background, banner, builder, business, businessman, card, celebration, concept, construction, contractor, creative, design, employee, employers, employment, engineer, freedom, greeting, group, happy, happy labor day, happy labour day, helmet, holiday, illustration, industrial, industry, international, job, labor, labor day, labour, labour day, marketing, may, mechanism, national, people, poster, professional, symbol, team, template, together, work, worker, workers, world,