The privately-owned firm is not related to Skanska McNicholas.
David Callaghan was killed when he was hit by a passing vehicle while carrying out road works in Coleraine, Northern Ireland, according to the BBC.
McNicholas Construction Services was found guilty of breaching health and safety legislation at Ballymena Crown Court .
The court heard there were no warning signs or any other precautions to safeguard Callaghan while he worked.
Kevin Toner, deputy chief executive with HSENI, said road works needed to be carried out in a "well planned and safe manner".
"This includes the need to provide adequate signage, warnings and, where required, road closures in order to provide safety to all persons at work on or near roads," he said.
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