No person or persons employed in a textile factory, whose principal employment is the tending or repairing of machinery, shall be required to lift by hand, as a regular part of his or their duties, any object or objects the combined weight of which totals more than three hundred and twenty-five pounds.
Mass. Gen. Laws ch. 149, § 141A
Lifting heavy objects in textile factories
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.