His employer is a taskmaster.
"Civics and Health"
William H. Allen
His father was little more than a dour taskmaster to the boy.
"The Pioneers"
Katharine Susannah Prichard
They knew this attack was coming; it was clear that it must come to them, and at night they worked hard to protect themselves, fear being their taskmaster.
"From Bapaume to Passchendaele, 1917"
Philip Gibbs