He heard the riverboat workers call out the words "mark twain!"

VOA: special.2010.03.21

In other words, workers get a deduction--but on a larger number.

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It focuses on the creation of the ship, telling the story through the eyes and words of the workers who put a piece of themselves into the ship and those who sailed from Belfast never to return.

BBC: NEWS | UK | Northern Ireland | City celebrates Titanic anniversary

In other words, the supply of workers will shift to meet the demand, although probably at slightly lower wage rates.

FORBES: Supply Side Employment Growth