TEXT: OPTION RULE: BOOT HILL (3rd Edition Rules)
  Work Skills
  With the limited number of Skills, both Work and Weapon, that players
   are give to assign their characters during the design phase, often true
   'work' skills are overlooked.. rightfully so. Fast Draw or another
   point added to Pistol are more likely to save a PC's life then a good
   grasp of Civil Engineering. On the other hand these types of 'fringe'
   skills help to 'flesh-out' a Player Character and assist in role-playing.
   Therefore, the following Optional Rule is offered to help give Character's
   a bit of depth without making the player sacrifice much-needed Initial
   Skills.
  Once the player has chosen all of his Initial Skills (whether it be 6, 8
   or 10), have the player roll d100 three times and consult the chart for
   results. Re-roll any duplicate skills. The Player may now add ONE of the
   randomly determined Work Skills (his choice which one) to his
   Character's Skills. Roll the Skill Score as normal. If the selected
   Skill has a prerequisite of Literacy (and the PC in question doesn't
   have Literacy), then the Player may take both the Skill Chosen and
   Literacy, but will have the split the Skill Score rolled between the
   two Skills.
  The Skill should be explained in some way in the characters background,
   i.e.. perhaps it from some past job the character held, or a skill passed
   on by his family.
  
  RANDOM CHART FOR 'BONUS' WORK SKILL:
  Roll
         Skill
  1, 2
  Accounting
  3, 4
  Artillerist
  5, 6
  Artist
  7 - 9
  Assaying
  10 - 12
  Bartending
  13
  Bureaucracy
  14, 15
  Carpentry
  16, 17
  Chemistry
  18, 19
  Civil Engineering
  20 - 22
  Cooking
  23 - 25  
  Cow Handling
  26, 27
  Dentistry
  28, 29
  Entertainer
  30, 31
  Farming
  32 -34
  Gun Smithing
  35 - 37
  Indian Contact
  38, 39 
  Law
  40
  Linguistics
  41, 42
  Photography
  43
  Pocket Picking
  44, 45
  Preaching / Theology
  46 - 48
  Printing / Journalism
  49 - 51
  Prospecting / Mining
  52, 53
  Public Speaking
  54, 55
  Railroad Engineer
  56 - 58
  Roping
  59, 60
  Saddle Making
  61 
  Scouting
  62, 63
  Sheep Herding
  64, 65
  Silver Smithing
  66 - 68
  Smithing
  70
  Stealth
  71 - 73
  Surveying / Mapmaking
  74, 75
  Survival
  76
  Swimming
  77, 78
  Tailor / Seamstress
  79 - 81
  Teamster
  82, 83
  Telegraph
  84, 85
  Thespian
  86 - 88
  Trading
  89 - 91
  Trapping
  92, 93
  Veterinarian
  94, 95
  Wainwright
  96 , 97
  Whip
  98 - 00
  Wrangling
  
SOURCE: textdata/thevault/Boot Hill/3rd Party/Option Rule - Work Skills 3e.pdf