This clarify any doubts as to whether or not it's a crime to serve someone underage. This from the LCBO's own site.
Reproduced under the fair dealings act ala the usual provisio's...
http://www.lcbo.com/socialresponsibility/alcoholminors.shtml
KEEPING ALCOHOL OUT OF THE HANDS OF MINORS
ENSURING ONLY THE RIGHT PEOPLE GET SERVED
Preventing sales to minors and those who appear intoxicated is a year-round responsibility LCBO employees take very seriously. Our Challenge and Refusal program helps ensure only the right people get served. In fiscal 2007-2008, LCBO store staff challenged more than 2 million people who appeared underage or intoxicated. Just over 134,000 were refused service – a nine per cent increase from last year and a new record. Of those refused, 83 per cent were for age-related reasons.In Ontario, it’s illegal to consume alcohol before the age of 19.
It’s also illegal for anyone to supply alcohol to minors. When staff have reasonable grounds to believe someone is buying for a minor, the Liquor Licence Act gives them the right and responsibility to refuse the sale.
This chunk from the liquor license act. I underlined the section pertaining to parental consent.
http://www.qp.gov.bc.ca/statreg/stat/l/96267_01.htm#section33
Supplying liquor to minors
33 (1) A person must not
(a) sell, give or otherwise supply liquor to a minor,
(b) have liquor in his or her possession for the purpose of selling, giving or otherwise supplying it to a minor, or
(c) in or at a place under his or her control, permit a minor to consume liquor.
(2) Subsection (1) does not apply if liquor is
(a) given to a minor by his or her parent, spouse or guardian in a residence for consumption in the residence,
(b) administered to a minor by or under the authority of a medical practitioner or dentist for medicinal purposes, or
(c) given or otherwise supplied to a minor in accordance with the regulations.
(3) A person has liquor in his or her possession when the person has it in his or her personal possession or knowingly
(a) has it in the actual possession or custody of another person, or
(b) has it in or at a place, whether or not that place belongs to or is occupied by the person, for the use or benefit of the person or another person.
(4) If one of 2 or more persons, with the knowledge and consent of the rest, has liquor in his or her possession, it is deemed to be in the possession of each of them.
(5) It is a defence to a charge under this section if the defendant satisfies the court that, in reaching the conclusion that the person was not a minor, the defendant
(a) required that the person produce identification, and
(b) examined and acted on the authenticity of the identification.
(6) A person who contravenes this section commits an offence and is liable on conviction to a fine of not less than $500.
Prohibitions with respect to minors
34 (1) A minor who purchases or consumes liquor on a licensed establishment, except as provided under this Act or by the Liquor Distribution Act, commits an offence and is liable on conviction to a fine of not less than $100.
(2) A minor who, without lawful reason or excuse, enters or is found in a liquor store, or in that part of a licensed establishment where the minor is not permitted by the regulations, commits an offence and is liable on conviction to a fine of not less than $100.
(3) A minor who, without lawful reason or excuse, has liquor in his or her possession commits an offence.
(4) A minor commits an offence who, for the purpose of purchasing or attempting to purchase liquor or of gaining or attempting to gain access to a licensed establishment, presents identification, proof of age or any other record to establish his or her age or identity if that identification, proof of age or other record
(a) has been altered or defaced to misrepresent the age or identity of the minor,
(b) was not issued by the issuing agency to the minor,
(c) was issued by the issuing agency to another person, or
(d) is otherwise forged or fraudulently made.
Minors on licensed premises
35 A person who holds a licence under this Act or who sells liquor under the Liquor Distribution Act, or the person's employee, must not authorize or permit a minor to enter on or to be on premises where liquor is sold or kept for sale except
(a) if the minor is accompanied by a parent or guardian on premises where liquor is sold exclusively for consumption off the premises,
(b) with lawful excuse, or
(c) in prescribed circumstances.
Cheers.