R v Negus (1873) LR 2 CP 34 is an old English law case under the Larceny Acts which addressed the then definition of "control" for the purpose of determining who was a worker.
Mr Justice Blackburn held,
"the test is very much this, whether the person is charged and bound to obey the orders of his master. He may be so without being bound to devote the whole of his time to this service;' but if bound to devote his whole time to it, that may be very strong evidence of his being under control."