|The following is based on Fallout Shelter or Fallout Shelter Online and some details might contradict canon.|
The business suit can only be worn by male dwellers. It provides the wearer with an additional 4 points to Charisma. It is nearly identical to the Mayor outfit, except for the absence of the top hat and monacle.
Found in lunchboxes.
If the disassembly of the outfit is successful, junk is rewarded:
Business suit (1)
Free space in the storage room