N.Y. Lab. Law § 427

§ 427. Officers and nurses. Every employer of persons for work in\ncompressed air shall:\n 1. Keep at the place of work at all necessary times one or more duly\nqualified medical officers to care for cases of illness and to strictly\nadminister and enforce sections four hundred and twenty-six, four\nhundred and twenty-eight and four hundred and twenty-nine.\n 2. Keep at a medical lock required by subdivision nine of section four\nhundred and twenty-six a certified nurse selected by the medical officer\nor officers required by subdivision one of this section and qualified to\ngive temporary relief in cases of illness.\n