Ключевые слова: 1st may, background, banner, business, career, cartoon, celebration, character, concept, construction, creative, day, design, employers, employment, engineer, flat, freedom, greeting, group, hand, happy, holiday, illustration, industrial, industry, international, job, labor, labor day, labour, labour day, man, may, national, occupation, people, poster, professional, socialism, strong hand, symbol, team, woman, work, worker, workers, workers day, world,