Using Canlii, please find the following case decision: 550044 Ontario Ltd. v. Acaster, 2001 CanLii 13356 (ON LRB). Thereafter, please complete a written summary of the decision [i.e., a case brief]:

1. Who was involved in the case [case name and citation]

2. What happened in the case? [facts]

3. Which courts have heard the case already? [procedural history]

4. What are the legal issues the Tribunal must decide? [issues]

5. How did the adjudicator decide the case? [decision]

6. What legal principle does this decision stand for? [the ratio]

7. What is the explanation the Tribunal gave for its decision? [reasons]

Please USE YOUR OWN WORDS THROUGHOUT THE ASSIGNMENT. No quoting from the case please.

Please use the topics identified in the square brackets for each question, above, as the sub-titles for your brief. For example, the first section of your brief should be titled "case name and citation". For this assignment, legal citations are not required to be used. However, if you choose to use them, please ensure your citations conform to the Uniform Legal Citation Style (McGill Guide).