Can I just print out the free labor law posters that I’ve seen online?

This is not recommended because labor law posters are often required to be a specific size under the law. Some laws also require specific colors and font sizes for the posters. For example, the Federal Occupational Safety and Health Administration posters must be at least 8.5″ x 14″ and printed in a font that is at least 10 points, with headings in a font that is at least 36 points.