Cafeteria tray with protections comprising: - an internal surface adapted to act as an abutment surface for foods and drinks, rendering the transport thereof easy and safe; - an edge in relief adapted to prevent the outward sliding of the content on the internal surface; said edge in relief being installed along the perimeter of said internal surface; - a hollow lower shelf being situated immediately below said internal surface and comprising a base, charachterised in that - said hollow lower shelf is adapted to contain at least two protections made of transparent recycled plastic, when these are unused; said hollow lower shelf comprising at least a tab; - at least said tab adapted to stably block said protections within the hollow lower shelf, when said protections are unused; said tab being installed at one of the sides of said base of said hollow lower shelf through at least a hinge; said tab being shaped in a manner such to fill the space between the perimeters of said base of said hollow lower shelf and the perimeter of said internal surface, achieving the isolation of said lower shelf; - at least one said hinge adapted to allow the opening and/or closing of said tab; said hinge being installed on one of the sides of said base of said hollow lower shelf; - at least three supports with internal slit adapted to firmly retain said protections when these are used; said supports with slit being installed on the sides of said edge in relief, excluding one of the long sides; - at least three hollow housings shaped according to the reverse image of said supports with slit and installed below of said hollow lower shelf; said hollow housings being installed precisely aligned according to the position of said supports with internal slit, allowing a simple stacking of multiple cafeteria trays with protections; - said at least two protections adapted to isolate the user from the other diners; said protections being engaged in said hollow lower shelf, when unused, or being engaged on said supports with internal slit, when one decides to use them. - an internal surface adapted to act as an abutment surface for foods and drinks, rendering the transport thereof easy and safe; - an edge in relief adapted to prevent the outward sliding of the content on the internal surface; said edge in relief being installed along the perimeter of said internal surface; - a hollow lower shelf being situated immediately below said internal surface and comprising a base, - said hollow lower shelf is adapted to contain at least two protections made of transparent recycled plastic, when these are unused; said hollow lower shelf comprising at least a tab; - at least said tab adapted to stably block said protections within the hollow lower shelf, when said protections are unused; said tab being installed at one of the sides of said base of said hollow lower shelf through at least a hinge; said tab being shaped in a manner such to fill the space between the perimeters of said base of said hollow lower shelf and the perimeter of said internal surface, achieving the isolation of said lower shelf; - at least one said hinge adapted to allow the opening and/or closing of said tab; said hinge being installed on one of the sides of said base of said hollow lower shelf; - at least three supports with internal slit adapted to firmly retain said protections when these are used; said supports with slit being installed on the sides of said edge in relief, excluding one of the long sides; - at least three hollow housings shaped according to the reverse image of said supports with slit and installed below of said hollow lower shelf; said hollow housings being installed precisely aligned according to the position of said supports with internal slit, allowing a simple stacking of multiple cafeteria trays with protections; - said at least two protections adapted to isolate the user from the other diners; said protections being engaged in said hollow lower shelf, when unused, or being engaged on said supports with internal slit, when one decides to use them.