Ergonomic seating assembly

A multi-posture seating assembly for a worker working proximate to the floor, the seating assembly comprising:

• a frame adapted to rest at floor level, the frame having a forward end and a rearward end;
• a plurality of support members secured at the forward and rearward ends of the frame and providing easy displacement of the seating assembly along a support surface;
• an armrest and backrest-free upper support adjustably mounted to the frame, proximate to the rearward end, the upper support being at least forwardly and rearwardly tiltable relative to the floor;
• and
• a knee support extending longitudinally along the frame, frontwardly to the upper support and at a lower elevation than the upper support, the knee support being longitudinally substantially leveled for supporting the legs of the worker facing in one of the forward direction and the rearward direction relatively to the frame, the knee support pivoting between a substantially horizontal position and a rearwardly inclined position by applying pressure on a rearward end of the knee support, the displacement of the seating assembly along the floor being prevented when the knee support is in the rearwardly inclined position and allowed when the knee support is in the substantially horizontal position, the upper support and the knee support being configurable between a first configuration in which the upper support provides support to the torso of the worker facing rearwardly while the knees of the worker rest longitudinally on the knee support, and a second configuration in which the upper support is inclined relatively to the knee support to provide support to the buttocks of the worker facing frontwardly while the knees thereof rest longitudinally on the knee support in the substantially horizontal position.