Sickness is not only physical but it can be mental and spiritual as well, because many times people are spiritually sick.
Whenever you are not happy, that means you are sick.
Tell them there is an Ayurvedic clinic. Go and take your Nadi Pariksha tomorrow morning.
You can say you have come to balance your imbalances or else how can you work in your workplace? You have to be balanced, mentally, physically and emotionally.