The invention provides an improvement to a chair which has a tiltable seat carrier (1) and a tiltable backrest (2) on the backrest carrier (5) which are forcibly coupled to one another, and to an individual adjustment of the tilt of the seat carrier (1) in relation to the backrest carrier (5).The improvement consists in the fact that there is provided on the underside of the seat carrier (1) a bearing block (10) having a slideway contour (14) and a vertical slot (13) in which the flange (9) of a lifting element (7) is mounted vertically movably, and the lifting element (7) has a substantially triangular collar (12) which slides on the substantially rectangular slideway contour (14) when the flange (9) moves vertically. This means that the tilt of the seat carrier (1) can be adjusted to be steeper or flatter by turning the lifting element (7), and the limit positions are completely stable. The possibility of automatic unlocking is ruled out.