The pulp and paper company says chief financial officer Daniel Buron will assume Williams’s authority and responsibility until he returns.
Buron will also continue in his role as CFO.
The company says its board expects the business to continue to operate as normal.
Domtar manufactures and sells a wide variety of pulp, paper and personal care products.
The company announced a deal earlier this year to sell its diaper and adult incontinence business to private equity firm American Industrial Partners for US$920 million.
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