he prominent Hub builder at the center of the tragic Emerson College scaffolding collapse is financially struggling, as its big contracts wrap up and as a round of painful layoffs looms.

Macomber, which the Herald has learned was considering a sale even before the April deaths of two workers and a passer-by at the Emerson dorm site, has had trouble finding new work since the fatal mishap, union officials and an industry insider said.

The 102-year-old company, which is building prominent landmarks - like public television station WGBH’s new Brighton complex, near the Massachusetts Turnpike, and the Institute of Contemporary Art’s new Fan Pier waterfront palace - has three or four major projects ending this year, with no work lined up for those employees, executives said.

Dozens of Macomber managers and workers, concerned about the winding down of some of Macomber’s big projects, have jumped ship in recent months, industry insiders said. Workers at the Emerson project, meanwhile, were recently informed their jobs would end when construction wraps up, insiders said.

The Emerson accident, while tragic, is not a “major business factor” for the company, with Macomber covered by contracts and insurance, the chief executive wrote.

The April 3 collapse of scaffolding at Emerson’s 14-story Piano Row dorm plunged two workers 100 feet to their death, while crushing a doctor driving by on Boylston Street in his Honda Civic.

As for a possible sale, Macomber said the company frequently entertains inquiries about “alliances” and “joint ventures,” but no such talks are under way now.

The company went through a succession of leaders over the past few years before John Macomber, whose family controls the company, stepped in to take back control. The end of the Big Dig and a construction market flooded by hungry out-of-state and international firms has meant that Macomber, even before the Emerson tragedy, was having trouble lining up new work.

Industry officials said the company was badly hurt by the Boylston Street accident and failed to win contracts they had hoped would carry them out of the controversy. Federal safety regulators said the causes of the collapse are still under investigation.

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