Ключевые слова: advice, agency, agent, answering, asian, assistant, business, businessman, businesswoman, call, care, center, collaboration, colleagues, consultant, contact, coworker, coworking space, customer, earphone, frustrated, happiness, hard, helpline, late, microphone, night, number 24, number 7, office, online, operator, overtime, overwork, service, shift, sleep, successful, support, team, teamwork, technical, telemarketing, tired, tried, work, worker, working, workplace,