Final answer:
In Act 1 of 'Romeo and Juliet', Sampson and Gregory work for the Capulet family, setting the stage for the play's themes.
Step-by-step explanation:
In Act 1 of William Shakespeare's Romeo and Juliet, Sampson and Gregory are employed by the Capulet family. This detail is essential as the Capulets are one half of the feuding families central to the play's conflict. As servants of the Capulet household, Sampson and Gregory introduce the play's themes of violence and family loyalty from the very beginning, engaging in a scuffle with the Montague servants.