  The employees health and wellbeing are an actual topic in our fast-moving
world. The employers losing money when their employees suffer from different
health problems and cannot work. The major problem is the spinal pain caused by
the poor sitting posture on the office chair. This paper deals with the
proposal and realization of the system for the detection of incorrect sitting
positions. The smart chair has six flexible force sensors. The Internet of
Things (IoT) node based on Arduino connects these sensors into the system. The
system detects wrong seating positions and notifies the users. In advance, we
develop a mobile application to receive those notifications. The user gets
feedback about sitting posture and additional statistical data. We defined
simple rules for processing the sensor data for recognizing wrong sitting
postures. The data from smart chairs are collecting by a private cloud solution
from QNAP and are stored in the MongoDB database. We used the Node-RED
application for whole logic implementation.
