459. Every principal contractor within the meaning of the Act respecting occupational health and safety (chapter S-2.1) who contravenes the first paragraph of section 190 or section 191 is guilty of an offence and liable, in addition to costs, to a fine of not less than $500 nor more than $1 000 in the case of a natural person and to a fine of not less than $1 000 nor more than $2 000 in the case of a legal person.