Final answer:
The office manager from Gregor's company visits the Samsas' apartment to find out why Gregor is not at work.
Step-by-step explanation:
The individual who comes to the Samsas' apartment to inquire about Gregor's absence from work is his office manager from the company where he is employed as a traveling salesman. This event occurs in novella The Metamorphosis, where Gregor Samsa awakens one morning to find himself transformed into a large insect. Concerned by Gregor's uncharacteristic absence and lack of communication, the office manager personally visits to ascertain the situation.