Danish shipping and oil group A.P. Moller-Maersk A/S’s chief executive will remain on sick leave for another six to eight weeks but the company is running smoothly in his absence, Maersk said on Monday.

Nils Smedegaard Andersen, 53, has extended his sick leave on his doctors’ advice pending further surgery to fix a heart problem.

In Andersen’s absence A.P. Moller-Maersk is being run by its executive board, the members of which report directly to Chairman of the Board Michael Pram Rasmussen, the company said.

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