Yes, you must.
Safeguarding the right to reserve of private life, the worker must inform the employer about the aspects relevant to the provision of the labour activity, as well as to comply with the occupational safety and health requirements laid down in the provisions laid down in legal instruments and collective labour regulation instruments, as well as the instructions determined to that end by the employer.
In this sense, communication of risk behaviours, previously known and identified employer and/or official entities, as well as symptoms of the should be reported as soon as possible.