Thanks, Zia.
I'll try to state it as clearly as possible, but it can get a little esoteric within the industrial relations framework.
Essentially, a dependant contractor is a person who's not in a direct employment relationship with an employer. They don't have a contract with an employer. What they have is a dependence on the employer, both economically and in terms of their working conditions, that makes them so similar to employees that part 1 of the Canada Labour Code treats them as employees.
Under part 1, the definition of “employee” explicitly says that it “includes a dependent contractor”, so any time part 1 of the Canada Labour Code refers to employees, it's also referring to dependant contractors. Similarly, in Bill C-58, where you see the word “employee” appear—such as in the ban on replacement workers in proposed subsection 94(4) and in the ban on employees in the bargaining unit crossing the picket line and performing work during a full strike or lockout in proposed subsection 94(6)—that would also include dependent contractors that are in the bargaining unit.
I hope that clarifies this.