The control apparatus (100) includes an operation handle (1), an armrest (5), and a supporting mechanism (9) supporting the operation handle (1) and the armrest (5). The supporting mechanism (9) is configured to be transitionable between a first mode in which the operation handle (1) is hold to be positioned at a first height position (H1) which is 85 cm or more above a floor surface and a second mode in which the operation handle (1) is hold to be positioned at a second height position (H2) which is 48 cm or more below the first height position (H1).
