Sections 1 to 4 apply to F1a worker who at any time comes or ceases to come within the exceptions from those sections provided by F2section 199, and under section 209, as if his employment with his employer terminated or began at that time.

The fact that section 1 is directed by subsection (1) to apply to F3a worker as if his employment began on his ceasing to come within the exceptions referred to in that subsection does not affect the obligation under section 1(3)(b) to specify the date on which his employment actually began.