This pack contains 1 of 5 possible laborer:
Lex Leather
Exil Textile
Rubberta Rubber
Carl Bentley
Uni Versal
With the following drop RNG.
87.6289% Apprentice
9.2784% Journeyman
2.0619% Master
1.0309% Expert
The apprentice, journeyman, and master laborers are unique to their respective machines or factory.
The Expert Laborer on the other hand, can be staked to any machine.