How Many Hours Can an 18‑Year‑Old Work in a Day in NYC During Summer?

In New York City, an 18‑year‑old may work up to 8 hours per day during summer. This matches the general daily limit for workers under 18. Note that 18‑year‑olds are prohibited from hazardous occupations (e.g., heavy machinery, chemicals) and cannot stand for more than 4 consecutive hours without a break.