Ключевые слова: adult, business, businessman, caucasian, chinese, computer, dark, deadline, depressed, desk, emotional, employee, evening, fatigue, frustration, hand, head, headache, indoors, job, laptop, late, male, manager, men, night, occupation, office, overload, overtime, overwork, pain, person, portrait, problem, serious, sitting, sleepy, stress, table, technology, thinking, tired, unhappy, upset, working, workplace, worried, young,