19. Section 17 of the principal Act is amended —
by deleting the word “contractor” wherever it appears in subsection (1) and substituting in each case the word “employer”;
by inserting, immediately after subsection (1), the following subsection:
by inserting, immediately after the words “Where a claim has been” in subsection (2), the words “determined by the Commissioner to be”;
by deleting subsection (4) and substituting the following subsection:
“(4) Nothing in this section shall be construed as preventing the Commissioner from ordering the compensation under this Act to be recovered from the employer instead of the principal, and a claim so determined by the Commissioner to be made against a principal or an employer, as the case may be, shall not bar subsequent proceedings under this Act against the other to recover so much of the compensation as may remain unpaid.”; and
by deleting the section heading and substituting the following section heading:
“Liability of principals”.