A work station (40) for a packaging line which comprises an apparatus (4) prepared for executing a certain simultaneous action on packages (10) of an alignment of packages with a tool (46) which may be arranged above the level of the packages; and a transfer mechanism (31) for the simultaneous transport of an alignment of packages to be processed (10b) to the apparatus (4) and of an alignment of processed packages (10c) from the apparatus (4), said alignments being arranged parallel to each other and the transport direction of the packages being perpendicular to that of said alignments, the transfer mechanism (31) thus comprising a first and a second transport group (31a, 31b) arranged transversal to the forward direction of the alignments of packages and actuated in coordination, of which at least one of the first or second transport groups (31a or 31b) hangs by two opposing ends (32b) from two movable parts (60) of the transfer mechanism (31) which are movable on respective parallel planes of movement and which do not interfere with the vertical projection of the tool (45) of the apparatus (4). A packaging line (101, 102, 103) with a modular construction may comprise at least two work stations (40A, 40B) according to the invention connected by means of a conveyor with intermittent forward movement (2) via which the second transport group (31b) of a first work station (40A) delivers the alignment of processed packages (10c) and from which the first transport group (31a) of a second work station (40B) takes the same alignment of packages for the processing thereof.