‘I think my boss may be bipolar’

I think my boss may be bipolar. He has two different modes: he’s either charging round, full of energy, making bold decisions or he’s paranoid, negative and bullying. In the “up” moods he’s stimulating, though it’s exhausting trying to keep up. The rest of the time he is paranoid and hostile. I’ve worked for him for two years and though I admire his talent and charisma I find his mood swings increasingly stressful. A couple of weeks ago I tried to broach the matter, but he looked as if he was about to have a coronary, so I shut up. Is there anything I can do? And if not, how can I insulate myself from the worst of his rages?

Investment banker, male, 36

Dear Lucy

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Lucy Kellaway, FT columnist and associate editor, offers her solution to your workplace problems in a fortnightly column in the Financial Times. In this weekly online edition of her 'agony aunt' column, readers are invited to have a say too. Read more about Dear Lucy here.