Yes; however, the Labour Standards Act places some restriction on the employment of children under the age of 16.
(Part IX of the LAbour Standards Act)
An employer is prohibited from employing a child who is under the age of 16 in employment that is: likely to be unwholesome or harmful to the child's health or normal development, or if it is going to hamper the child's attendance at school.
Additionally, an employer shall not employ a child under 16 to work:
An employer shall not employ a child under age 14 unless the work is prescribed in the regulations under the Act. Also, an employer shall not employ a child while a strike by employees or a lockout of employees by the employer is in progress.
(sections 45.46(a) and 46.(b) of the Labour Standards Act)
Before employing a person under the age of 16, an employer must obtain the written consent of the parent or guardian. This consent must be kept as part of the record of employment and the age of the child shall be specified in the written consent.
(section 48.(1) of the Labour Standards Act)