Ключевые слова: 4, 4day, 5, advantage, arrangement, background, balance, business, businessman, change, choice, concept, copy space, day, decision, efficient, five, four, fourday, fourday week, fourday work week, idea, job, life, lifestyle, long, long work week, number, off, productive, prosschedule, rest, short, short work week, step, success, symbol, text, time, vacation, versus, week, word, words, work, worker, working, workweek,