Minor league baseball:
Southern Illinois Miners (coalmine country).
Lehigh Valley IronPigs (steelworkers).
Louisville Bats (baseball bat manufacturing).
Omaha Storm Chasers.
Tulsa Drillers.
Clinton (IA) LumberKings.
Williamsport (PA) Crosscutters.
All of the following were American minor league baseball teams in the late 19th to early 20th century, whose names referred to local industries or occupations.
Pottsville Anthracites (anthracite coal mines)
Milwaukee Cream Citys / Creams (locally-produced cream-colored bricks)
Kansas City Cowboys
Lancaster Ironsides
Oil City Oilers
Minneapolis Millers (flour mills)
Rochester Flour Citys (flour mills)
Oswego Starchboxes (Oswego Starch Factory)
Leavenworth Soldiers (U.S. Army Fort Leavenworth)
Wilkes-Barre Coal Barons
Manchester Farmers
Wheeling Nail Citys / Nailers
Birmingham Ironmakers / Iron Barons
Williamsport Lumber Citys
Scranton Miners / Coal Heavers
Sioux City Cornhuskers
Davenport Onion Weeders
Lincoln Tree Planters
Aspen Silver Kings (silver mines)
Wilmington Peach Growers / Peaches
Providence Clamdiggers
Appleton Papermakers
Peoria Distillers
Brockton Shoemakers
Mansfield Electricians
Augusta Electricians
Petersburg Farmers
Norfolk Oystermen
New Bedford Whalers
Gloversville Glovers
Carbondale Anthracites
San Antonio Missionaries
Lynchburg Tobacconists
Portsmouth Truckers
Paterson Silk Weavers
Saginaw Lumbermen
Owensboro Corncrackers
Reading Coal Heavers
Sunbury Railroaders
Zanesville Clay Diggers
Asheville Moonshiners
Grand Rapids Cabinet Makers
Taunton Herrings
San Jose Florists
Fort Collins Farmers
New London Whalers
Cortland Wagonmakers
Sacramento Brewers
San Jose Prune Pickers
Seattle Clamdiggers
Bristol Bellmakers
Worcester Farmers
Mansfield Haymakers
Wheeling Stogies (Marsh Wheeling cigar factory)
Schenectady Electricians
Grand Rapids Furnituremakers
Troy Washerwomen
Fort Wayne Railroaders
Grand Rapids Woodworkers
Marion Glassblowers
Ilion Typewriters (E. Remington & Sons, manufacturer of firearms and typewriters)
Newport News-Hampton Shipbuilders
Norfolk Skippers
Bristol Woodchoppers
Lagoon Farmers
Butte Miners
Sedalia Gold Bugs
Chanute Oilers
Iola Gasbags / Gaslighters (natural gas)
New Bern Truckers
Greensboro Farmers
Marion Oilworkers
Newark Sailors
Pine Bluff Lumbermen
Pittsburg Coal Diggers
Joplin Miners
Webb City Goldbugs
Corsicana Oil Citys
Boise Fruit Pickers
Greenville Cotton Pickers
Fort Dodge Gypsum Eaters (gypsum mines)
Boone Coal Miners
Superior Longshoremen
ETA: **spark240 **beat me by one post!
One stinkin’ post!
I thought San Diego’s basketball team was the Clippers, who moved on to become Los Angeles’ junior varsity team.
You are correct, but the Clippers were San Diego’s second NBA team. The Rockets were originally based in San Diego, where they played for the first four seasons of their history (1967-1971), before moving to Houston (note that Sin Serially had the timing of that move incorrect).
The Buffalo Braves then moved to San Diego in 1978, becoming the Clippers, before moving to Los Angeles in 1984.
Anaheim Ducks - I imagine there are some people in Anaheim who are employed in wearing a duck costume.
Don’t forget Aston Villa - Villains (or is the “i” not supposed to be included :)).
Hey, GorillaMan, long time no see (for me, anyway). How could you miss out your Tractor Boys (Ipswich Town), surely that counts as an occupation!
More in line with the OP, several Eastern European football (soccer) teams are named this way, e.g. Red Star Belgrade (in Serbia) was to do with the army, I believe, Lokomotiv Moscow was originally railway workers. There are others, but I can’t remember them right now.
Another tribute to Michigan autoworkers, although at the minor league level, the Lansing Lugnuts.
But they were named after a movie pee-wee league team. And that movie team got its name from the surname of the owner of the law firm that sponsored them, who also happened to be the boss of their coach.
Of course, the movie was a Disney movie, so the connection is definitely there, but it’s not quite so direct.
meh
As a young boy I always liked the sound of the amateur football team “Billingham Synthonia”
A lovely, lyrical name I thought. I was somewhat shaken to find some years later that it started life as a works team from the local ICI plant that produced Synthetic Ammonia.
And so a dream dies.
Indeed. As a reference to local industry, Packers was actually more appopriate for the Chicago Packers, a failed early NBA franchise (1961-62), since meat packing was one of the iconic industries in Chicago (hog butcher to the world, and all that).
The Steelers were originally called the Pirates, believe it or not.
The OP specified working people.
Oh no you DI-IN’T!!! 
Soccer:
Total Network Solutions (now called New Saints) - League of Wales
Right, Scottish football…
In the Highland League (sort of the regional fifth tier of Scottish football), there are:
**Forres Mechanics **(definitely an occupation, but not one that’s peculiar to the area)
Inverurie Loco Works (named for the place of employment rather than the individuals that worked there, but still worth a mention)
Elsewhere in non-league Scottish football, I’ve always loved the name **Burntisland Shipyard **(again, not an occupation, rather an actual workplace).
Further up the ladder, **Hamilton Academical **have already been mentioned. If we’re allowing nicknames:
Motherwell - The Steelmen (undoubtedly named for the dominant local heavy industry)
Aberdeen - The Dons (reputedly because they were founded by teachers and lecturers)
Errr… that’s pretty much it!
Ooh, we could use that in Chicago as well, but with a different meaning of “don”.
The team was originally owned by the Disney company, so yes, Mighty Ducks of Anaheim was a direct connection to the movie at that time. Before the 2006 season, Henry and Susan Samueli, who purchased the team from Disney, renamed the team to the Anaheim Ducks, removing the “Mighty” from the official team name.
You miss my point.
They weren’t named direcly after Donald Duck, which is what cmkeller was implying (unless there are other people in duck costumes walking around Anaheim that I’m unaware of). They were named after the coach’s boss from the movie.
So there is no direct connection between the workers in the region and the name.
But Disney created both, so there is an indirect conection.