[55] Given the above definitions, it does seem to me to be very difficult to sustain an argument that employees who are located 3-4 km from their direct supervisors, are within the immediate vicinity of the persons who are overseeing them. Thus, while the adjective 'immediate' might not strictly apply to the waste and water work here in dispute, the word must be read in conjunction with 'supervision'. When viewed in this light, the force of Mr Magee's argument as to the actual nature of the supervision, becomes obvious. There can be no doubt that, for all practical purposes, the waste and water employees are under the oversight and direction of the Ramp Supervisors. Any problems, such as changed bay allocation or other directions from Virgin's operations, are not decisions undertaken independently by the employees themselves in the course of their duties; rather they follow the directions of others in the performance of these duties. In my view, this is a fundamental difference to working 'without immediate supervision'. In any event, I am bound to follow the agreement interpretation principles (referred to earlier) which require the Tribunal to consider the words in their context, and not in isolation. In doing so, I am unable to agree with the Union's strict literal approach to the interpretation of the words, 'without immediate supervision' as applying to the work in dispute.