При обследовании охраны труда молодежи

When examining the youth labor protection at workplaces, the labor protection committee established:
1) Minors are hired without a preliminary medical examination;
2) 14-year-old Kukushkina works as a courier for five hours;
3) An underage Ivanov is granted annual leave in the autumn season.
What violations of labor law are committed by the employer? Justify the answer.

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