At 14 — no more than 24 hours a week, and only if you're still in school: work has to happen outside school hours (Art. 31(2)(2), Art. 69(1)(1) of the Labor Code of Kazakhstan).
At 15 — also no more than 24 hours a week. The basis is a bit wider: either being a student, or already having completed basic secondary education (Art. 31(2) of the Labor Code).
Night work (Art. 76(2)), overtime (Art. 77), and shift-method work (Art. 135(2) of the Labor Code) are fully banned regardless of your consent.
You can't be given a second (concurrent) formal employment contract (Art. 68(3)), and no one can make you sign a full financial liability agreement, even if you're fine with it yourself (Art. 124 of the Labor Code).
Before a minor starts work, the employer must arrange and pay for a preliminary medical exam (certificate form 075/u). You shouldn't have to pay for it out of pocket.
Before age 16, the employment contract is co-signed by a parent — their signature is required (Art. 31(3) of the Labor Code). From 16 you sign it yourself, but a guardian's consent to processing your personal data on the platform is required at any age under 18.
This content is informational and doesn't replace advice from a lawyer.