What is the test for future income loss for a plaintiff who was injured in a motor vehicle accident?

Since Brown v. Golaiy (1985), 26 B.C.L.R. (3d) 252 (S.C.), the law on future income loss is clear that each case must be assessed according to that specific plaintiff’s loss. Some general principles to keep in mind are: a) Has the plaintiff been rendered less capable overall from earning income from all types of employment? b) Has the plaintiff been made less marketable or attractive as an employee to potential employers? c) Has the plaintiff lost the ability to take advantage of all job opportunities which might otherwise have been open to him, had he not been injured? and d) Has the plaintiff become less valuable to himself as a person capable of earning income in a competitive labour market?