My employer is monitoring me

Covert monitoring of employees is very rarely lawful — transparency is a core requirement (Art. 5(1)(a) GDPR), and you can also ask the employer directly what data it processes about you (Art. 15).

Because employment rules are national under Article 88, whether narrow exceptions exist (e.g. investigating serious wrongdoing) depends on your country. Write down what you know — what is monitored, since when, how you found out — and contact your Data Protection Authority, labour inspectorate or union before confronting anyone. If dismissal or discipline is already in play, speak to a lawyer or free legal clinic first.