'the better view is not whether the casual worker is obliged to turn up for, or do, the work, but rather, if he turns up, and does the work, whether he does so under a contract of service or for services'
'The employer of such a servant can direct the objective to which the servant's skill is to be addressed, but he is powerless to control the manner in which the servant's skill is exercised'
'That is enough to create a contract, albeit a unilateral contract…'