Yes your employees may be legally entitled to time off work to watch their kids, even if they give you no advance notice
Alberta employers should keep this decision in mind when responding to an employee’s last minute request or demand for time off work to deal with childcare obligations, and even other family needs. Arguably, and if the right facts exist, employees could be protected under the Alberta Human Rights Act even if they have made no efforts to seek out alternate child care. The result is that they could be entitled to the short period of time off, in most cases despite the negative impact that their absence will have on the employer’s operations.