A work table for an automatic machine for cutting leathers and the like, includes a plurality of holes opening outwards and communicating with a vacuum source, to make portions of leathers to adhere to the active surface (3) of the work table (1). The work table (1) includes a central body (1a), supported by a fixed structure (2). At least one lateral portion (1h, 1j), connected to the fixed structure (2), is moved by first motion means (10h, 10j) between at least one work configuration (K1), in which its active surface (3h, 3j) is aligned with the active surface (3a) of the central body (1a), to define the active surface (3) of the work table (1), and a rest configuration (K2) of reduced dimension, in which the active surfaces (3a, 3h, 3j) of the central body (1a) and the lateral portion (1h, 1j) are arranged at an angle with respect to each other.