| 1855 Place |
| 1 Way Service Inc |
| 21st Century Salvage, Inc. |
| Absolute Fire Protection |
| A.C. Coutts, Inc. |
| Accurate Painting Company |
| Ace Steel Erection, Inc. |
| Acme Wire & Iron Works |
| Acoustech Ceilings Inc. |
| Acoustic Ceiling & Partition Co., Inc |
| Action Management Corp |
| Adamo Demolition Company |
| ADECCO |
| Administrative Controls Management, Inc. |
| Advanced Industrial Services |
| Advantage Electric & Controls, Inc. |
| AECOM |
| A & E Contracting Inc |
| AGC - Greater Detroit |
| Airflow Testing, Inc. |
| Air Solutions Inc |
| Ajax Paving Industries, Inc. |
| Akins Construction, Inc. |
| Aladdin |
| Albanelli Cement Contractors, Inc. |
| Alberici Constructors |
| Alere TPA |
| Allegiance Maintenance Service |
| Alliance Air Conditioning & Heating Inc |
| Alliance Coating Systems |
| Allied General Mechanical LLC |
| Allied Ventilation, Inc. |
| Allingham Corp. |
| Alltech Engineering |
| Amalio Corp. |
| American Pavement Sawing LLC |
| Andy J. Egan Company |
| Angelo Iafrate Construction Company |
| AnLaan Corporation |
| ANM Construction Co., Inc. |
| Ann Arbor Ceiling & Partition |
| API Construction Company |
| Applegate, Inc. |
| Araneae Inc. |
| Architectural Contractors Trade Association |
| Arctic Air, Inc |
| Aristeo Construction |
| Aristeo Services |
| Artisan Tile Inc. |
| Asbestos Abatement Local 207 |
| Asbestos Workers Local 25 Contractors/JATC FUND |
| Asbestos Workers Local #25 J.A.C. |
| Asbestos Workers Local #47 Contractors |
| A & S Industrial Coating, Inc. |
| Assemblers, Inc. |
| Associated General Contractors of Northwest Ohio |
| ASW Local 1123 |
| Automatic Systems, Inc. |
| A. Z. Shmina, Inc. |
| BAC Local 2 Tile Marble Terrazzo |
| Badger Daylighting Corp |
| Baker Construction Company Inc. |
| Ballard Contracting Solutions |
| Barmatic Inspecting Co., Inc. |
| Barnhart Crane & Rigging Co. |
| Baron Mechanical Contractors, Inc. |
| Barton Malow Bootcamp |
| Barton Malow Company |
| Barton Malow Enterprises |
| Barton Malow-Hunt White JV |
| B & A Structural Steel LLC |
| Bay Area Assoc. of the MI Plumbing & Mechanical Contractors |
| Bay Controls, Inc. |
| Bayview Electric Co. |
| B & B Concrete Placement, Inc. |
| Belle River Industrial Services LLC |
| Benkari LLC |
| Ben Washington & Sons Plumbing & Heating Inc. |
| BERG Group |
| Best Impressions, Inc. |
| Bierlein Services |
| Blackrock Resources LLC |
| Blaze Contracting, Inc. |
| Bloom Roofing Systems, Inc. |
| Blue Ribbon Contracting, Inc. |
| Blue Star, Inc. |
| B & M Crane Rental |
| BMI |
| BNE Services LLC |
| BNV Earthmovers |
| Boettcher Masonry |
| Boilermakers Local 169 |
| Boone and Darr, Inc. |
| Bornor Restoration Inc. |
| Bouma Interiors |
| Brandenburg Industrial Service Co. |
| Brand Energy and Infrastructure |
| Brand Scaffold Rental & Erection Co. |
| Brazen & Greer Masonry |
| Brencal Contractors, Inc. |
| Bricklayers and MI BAC |
| Brightview Landscape Development |
| Brinker Chirstman Joint Venture |
| Brinker Mechanical Insulation, Inc. |
| Brinker Team Construction Co. |
| Bristol Steel & Conveyor Corp. |
| Brix Corporation |
| Brock Industrial Services, LLC |
| Bruner Plumbing & Heating |
| Bumler Mechanical Inc |
| Cadillac Asphalt L.L.C |
| Calvin & Company, Inc. |
| Campbell Inc. |
| Capital Industrial Coatings |
| Cardinal Contracting |
| Carlson Walbridge Group LLC |
| Carpenters Apprentice Drug Fund-Detroit |
| Carpenters Drug Fund - ACT/ AGC/ CAM |
| Carrier Corporation |
| C.A.S.S, Inc. |
| C & B Glass Inc |
| CB, Inc |
| CBRE GWS LLC Milford |
| C & D Hughes Inc |
| CEC Controls Co., Inc. |
| Ceco Concrete Construction, LLC |
| CEI Michigan LLC |
| Cement Mason Drug Fund-AGC/CAM |
| Cement Masons Local 2 |
| Centerline Electric |
| Central Interiors, Inc. |
| Certified Abatement Srvc., Inc. |
| Christen Detroit |
| Christian Brothers Plumbing Heating & Sewer Cleani |
| Christman Constructors Inc. |
| City Carpet & Flooring Inc. |
| City Renovation & Trim Inc. |
| City Re-Steel , Inc. |
| City Steel Inc |
| Clark Construction Company |
| Clarkston Steel, Inc. |
| CLC Contracting Services LLC |
| Cleaning Contractors Inc |
| C-logic, Inc. |
| C.L. Rieckhoff Co., Inc. |
| CMF Group |
| Colasanti Construction Services, Inc |
| Colasanti Specialty Services |
| Colombo Sales & Engineering,Inc |
| Comau, Inc. |
| Comet Contracting, Inc. |
| Commerce Controls Inc. |
| Commercial Construction, Inc |
| Commercial Contracting Corporation |
| Commercial Diving & Marine Services, Inc. |
| Compass Technology Solutions LLC |
| Complete Mechanical Contracting, Inc |
| Composite Cooling Solutions L.P. |
| Concrete Cutting & Breaking Co. |
| Condor Metal Roofing & Siding |
| Connelly Crane Rental Corp. |
| Conquest Construction Company, Inc. |
| Conquest Manufacturing |
| Construction Resource Services |
| Conti Corporation |
| Continental Interiors Inc. |
| Continental Vulcanizing Inc. |
| Contract Glaziers Inc. |
| Control Solutions Inc |
| Conventional Carpet, Inc. |
| Copper Range, Inc. |
| Core Mechanical Inc. |
| Coritech Services, Inc |
| Cougar Contracting, Inc. |
| Couturier Iron Craft, Inc. |
| Crawford Pile Driving |
| Crook Electric Co. |
| Cross Concrete Pumping |
| Crown Corr Inc. |
| C & R Plumbing & Heating, Inc. |
| C-Stone Installation Company |
| Curtis Glass Company |
| Cut and Core Concrete Cutting LLC |
| Dan Allor Plumbing and Heating |
| Danboise Mechanical, Inc. |
| Dans Excavating, Inc. |
| Davenport Masonry Inc. |
| Davis Iron Works, Inc. |
| D.C. Byers Company - Detroit/Lansing |
| D & D Machinery Movers, Inc. |
| D & D Planning Design Millwork LLC |
| Dearborn Mid-West Company, LLC |
| De-Cal, Inc. |
| De-Cal Service Group(A Division of De-Cel Inc) |
| Dee Cramer, Inc. |
| Delrose Construction Co. Inc. |
| Delta Temp |
| DeMaria Building Company, Inc. |
| Denn-Co Construction, Inc. |
| Depcon Inc. |
| DES Electric LLC |
| Design Systems Incorporated |
| Detroit Automatic Sprinkler Co. |
| Detroit Carpentry LMPT- Local 1045 |
| Detroit Carpentry LMPT- Local 1234 |
| Detroit Carpentry LMPT- Local 687 |
| Detroit Diamond Drilling, Inc. |
| Detroit Dismantling Corp. |
| Detroit Edison |
| Detroit Electrical J.A.T.C |
| Detroit Elevator Co. |
| Detroit Fire Extinguisher Co. |
| Detroit Metro JATC |
| Detroit Piping Group, LLC |
| Detroit Power Systems, LLC |
| Detroit Public Schools |
| Detroit Spectrum Painters, Inc. |
| Detroit Workforce of the Future |
| Devon Facility Management |
| Devon Industrial Group |
| DH Construction Company |
| DiCosmo Construction |
| Diversified Construction Specialists, Inc. |
| Dixon, Inc. |
| Doan Construction Company |
| Dobson Industrial, Inc. |
| Dollins Construction Inc DBA Cowhy Hayes |
| Doublejack Electric Company |
| Douglas Steel Erection Company |
| DPSPMT, LLC |
| D.R.C.F.A |
| D & R Earthmoving, LLC. |
| DRV Joint Sealant Contractors, LLC |
| DTE Monroe |
| Dual Temp Mechanical |
| Duke & Duke Services, Inc. |
| Dunbar Mechanical Inc. |
| Duross Painting Company |
| Durr Systems Inc. |
| Dycon, Inc. |
| DZ Construction Company Inc. |
| Eagle Excavation, Inc. |
| East Edge Excavating |
| Eastern Mechanical Inc |
| E. C. Korneffel Co. |
| Edgewood Electric, LLC |
| Edwards Glass Company |
| EGD Glass |
| EKS Services Incorporated |
| E & L Construction Group, Inc. |
| Electrical Corporation of America Inc. |
| Electrical Power & Design, Inc. |
| Electrical Workers Fund - Local 275 |
| Elevator Constructors Local 36 |
| Elevator Technology Inc |
| Elite Mechanical Insulation LLC |
| Elite Mechanical Services Inc |
| Elite Technical Services Group Inc |
| Enviro-Aire |
| Environmental Controls Services Inc |
| Environmental Industrial Services Inc. |
| Environmental Testing Services |
| EQIS Taylor |
| Ericksons Incorporated |
| Essential Installation Inc |
| Eugenio Painting Company |
| E. W. Ensroth Company |
| Expert Mechanical Services Inc |
| Expo Technologies LLC |
| FANUC Robotics |
| Fastdecks, Inc. |
| Federal Industrial Services, Inc. |
| Ferndale Electric Co., Inc. |
| Fessler & Bowman, Inc. |
| F H Paschen S N Nielsen & Associates LLC |
| Finishing Trades Institute of the Great Lakes |
| Flatrock Bridge Group |
| Flint Electrical JATC |
| Flooring Services, Inc. |
| Flynn Paving Company |
| F M G Concrete Cutting Inc. |
| F. M. Sylvan , Inc. |
| Foco Metal Works LLC |
| Fontanesi and Kann Company |
| Forced Air Systems, Inc. |
| Ford Motor Company |
| Fort Wayne Contracting, Inc. |
| Foundation Steel LLC |
| Franklin Holwerda Company |
| Franklin Partition Corporation |
| Furniture Management Services |
| Future Fence Company |
| Future Maintenance,Inc. |
| Gallagher - Kaiser Corp. |
| Gandol, Inc. |
| Gardiner C. Vose, Inc. |
| GEM Industrial |
| General Acid Proofing, Inc. |
| General Motors Corporation - BIW Install |
| General Motors Corporation - CRW |
| General Motors Corporation - GAE Installation |
| General Motors Corporation-Global Health and Safet |
| General Motors Corporation - IS&S |
| General Motors Corporation - Maintenance |
| General Motors Corporation - MFD Pontiac |
| General Motors Corporation - Paint |
| General Motors Corporation - Powertrain |
| General Motors Corporation - Regional Engineers |
| General Motors Corporation - V M - Lansing Delta |
| General Motors Corporation-WFG Capital Projects |
| General Motors-WES |
| George I Landry Inc |
| George W Auch |
| Gerace Construction |
| Giffels-Webster Engineers, Inc. |
| Giffin International |
| Glasco Corporation |
| Glasrock Products/OMI |
| Glaziers Local 357 |
| Glaziers Local 826 IUPAT |
| Glazing Contractors Association IAF Fund |
| GM Energy & Utility Services |
| G.M. Refractories |
| GM & Sons, Inc |
| GM WFG - Mexico |
| Golden Refrigerant |
| Gordon North Roofing Co. |
| Goyette Mechanical Co. |
| Grand River Construction, Inc. |
| Granger Construction Company |
| Greater Detroit Building & Construction Trades Council |
| Greater Michigan UA 190 Joint Training Program |
| Great Lakes Ceiling & Carpentry, Inc. |
| Great Lakes Fire Protection |
| Great Lakes Hotel Supply Company |
| Great Lakes Steel Erectors |
| Gross Power Inc DBA Highgate Electric, Inc. |
| Ground Penetrating Radar Systems Inc. |
| Grunwell -Cashero Co. |
| GSI |
| GSI Electrical Services Inc |
| G & T Commercial Coatings Inc. |
| Guardian Equipment |
| Guardian Plumbing and Heating |
| Guideline Mechanical, Inc. |
| Gunthorpe Plumbing & Heating Inc. |
| Haley Mechanical |
| Hall Engineering Co. |
| Hamilton Contracting LLC |
| Hardman Construction, Inc. |
| Harmon Inc |
| Harnish Fireproofing LLC |
| Hartwell Cement Company |
| Hasper Equipment Co./Cloverdale Subsidiary |
| Hatzel & Buehler, Inc. |
| Hayes Mechanical |
| Healey Fire Protection, Inc. |
| Heat and Frost Insulators Local 47- JATC |
| Heat & Frost Insulators Local 25 JATC |
| Heat & Frost Insulators LU 25-Union/STO |
| Hennessey Engineers |
| Herc Rentals Inc |
| Hercules Material Holdings LLC |
| Heritage and Company Inc. |
| Heritage Mechanical LLC |
| Hess Glass Co. |
| High Voltage Maintenance |
| Higley Construction |
| Hi-Tech Electric Co. |
| HMC Mason Contractors |
| HM Environmental Services Inc |
| H. M. White, Inc. |
| Hoffman Bros. Inc. |
| Hollywood Plumbing and Heating, Inc. |
| Hoover Wells, Inc. |
| Hopp Electric Inc. |
| Hoyt, Brumm & Link, Inc. |
| Hubbell, Roth & Clark, Inc. |
| Hub Interiors Group LLC |
| HWX Services |
| IBEW Local 131 |
| IBEW Local 252/NECA Labor Mgt. Corp. Fund |
| IBEW Local 557 |
| IBEW Local 58 |
| IBEW Local 665 Labor-Management |
| IBEW Local 692 |
| IBEW Local 948 |
| Ideal Contracting, L.L.C. |
| Identify Inc |
| ILE Excavating, Inc. |
| Indicon Corporation |
| Industrial Applied Technologies |
| Industrial Demolition Services |
| Industrial Electric Co. of Detroit |
| Industrial Fence & Landscaping, Inc. |
| Industrial Piping & Maintenance Co, Inc |
| Industrial Plant Services |
| Industrial Power Systems, Inc. |
| Industrial Services, Inc. |
| Innovated Energy Controls |
| Ino-Tek, Inc. |
| Integrated Installations, LLC |
| Integrity Interiors Inc. |
| Interior Exterior Specialists (I.E.S.) |
| International Building Products Inc |
| International Industrial Contracting Corp. |
| International Test and Balance, Inc. |
| Ironside Safety Works |
| Iron Workers J.A.C. of Eastern Michigan |
| Iron Workers Local 147 |
| Iron Workers Local 25 Union |
| IUOE Local 324, JATF, Inc. - Freeland |
| IUOE Local 324, JATF, Inc. - Walker |
| IUOE Local 324 Journeyman and Apprentice Training Fund- Howell |
| IUPAT Local 1803 |
| IUPAT Local Union 312 |
| IW25 Iron Workers 25 Fund |
| Jackson Automatic Sprinkler |
| Janssen Refrigeration |
| J. B. Cain Company |
| JC Holly Contracting, Inc. |
| J.D. Candler Roofing Co. |
| JDG Service, Inc. |
| JDS Pro Inc |
| J.F. Cavanaugh Company |
| J. J. Barney Construction Inc. |
| J. J. Curran Crane Company |
| J & J Electric |
| J M & Sons Plumbing |
| John A. Papalas & Company |
| John Darr Mechanical Inc |
| John E. Green Company |
| Johnson Controls Inc.Auburn Hills/Sterling Hgts. |
| Johnson & Wood LLC |
| Journeyman and Apprentice Training Fund Local 324 |
| J. Ranck Electric, Inc. |
| JTK Electric LLC |
| Kaltz Excavating/M.U. E Inc |
| Kaywazee Installations Inc |
| KEI |
| Kem-Tec & Associates |
| Keweenaw Power Systems, Inc |
| Keyes2Safety |
| K & H Modular Construction LLC |
| Kiefer Specialty Floors, Inc. |
| Kiewit Corporation |
| Kiewit Power Constructors |
| Kiewit Power Constructors Co |
| KLA Laboratories, Inc. |
| KM Plant Services Inc |
| KONE Inc Livonia |
| Kropf Service Co. |
| Krull Construction Co. Inc. |
| K&S Mechanical Services LLC |
| Kulbacki, Inc. |
| Kvaerner Songer, Inc. |
| KVM Door Systems, Inc. |
| LaBelle Companies |
| LaBelle Electrical Contractors LLC |
| Laborers Drug Fund - ACT/AGC/CAM |
| Labor Management Cooperation Committee Inc. |
| LaDuke Corporation |
| LaForce LLC |
| Lake Erie Electric of MI, Inc. |
| Lanaville Foundations, Inc. |
| Lansing Electrical JATC |
| Lansing Glass Company |
| Laramie Enterprises |
| LaSalle |
| Lavazza Concrete Inc. |
| Lee Machinery Movers |
| Leidal & Hart Mason Contractors |
| Leidos Engineering LLC |
| Liberty Sheet Metal |
| Limbach Company |
| Lincoln Electrical Contracting |
| Livingston Engineering L.C. |
| Local 47 J.A.T.C. |
| Local Union 85 JATC |
| Long Mechanical |
| Lowe Construction Company |
| L. S. Brinker |
| Lutz Roofing |
| Lyon Mechanical Inc. |
| Macomb Mechanical Inc |
| Madias Brothers Painting Company, Inc. |
| Madison Heights Glass Co., Inc |
| MAG Insulation Inc |
| Malone Tile & Masonry |
| Mannik & Smith Group, The |
| Manticore Construction Services |
| Marc Dutton Irrigation |
| Martinez Mechanical Services, Inc. |
| Master Craft Floors |
| Master Mechanical Insulation, Inc. |
| Mattic Electric Inc. |
| McNally- Nimergood Co |
| McShane Mechanical Contracting, Inc. |
| McSweeney Electric |
| M.D.G. Enterprises Inc. |
| Mechanical Contractors Association of Detroit (MCA) |
| Mechanical Contractors Assoc. NW Ohio |
| Mechanical Controls & Maintenance, Inc. |
| Mechanical Heat & Frost Insulation II Inc. |
| Mechanical & Industrial Insulation Inc. |
| Mechanical Services LLC |
| Mechanical Sheet Metal Co. |
| Mechanical System Services |
| Medina Resources Group LLC |
| Metallizers of Mid-America, Inc. |
| Metro Detroit Glaziers JATF |
| Metro Elevator Co Inc. |
| Metro Environmental, Inc. |
| Metro Piping, Inc. |
| Michielutti Bros., Inc. |
| Michigan Carpenters Apprenticeship and Training Fund |
| Michigan Charter Associated General Contractors |
| Michigan Fence Company, Inc |
| Michigan HRDI - Kalamazoo |
| Michigan Industrial Group, LLC |
| Michigan Laborers Training Institute - Perry |
| Michigan Mechanical Insulation, Inc. |
| Michigan Overhead Door & Loading Dock Inc. |
| Michigan Pavers & Walls LLC |
| Michigan State AFL-CIO Workforce Development Institute |
| Michigan State Building Trades Council |
| Michigan Statewide Carpenters & Millwrights JATF |
| Mid-American Gunite |
| Mid-Michigan MCA |
| Mid-Michigan Mechanical Insulation, Inc |
| Mid Michigan Pride Painting |
| Mid Michigan Roofing, LLC |
| Midwestern Consulting |
| Midwest Installation, Inc. |
| Midwest Pro Painting, Inc. |
| Midwest Steel, Inc. |
| Miller Industries LLC |
| Millers Bros Construction Inc |
| Millwrights Local 1102 |
| MIS Corporation |
| MiSide dta Southwest Economic Solutions |
| M. J. Electric LLC |
| MJ Mechanical Inc. |
| ML Chartier |
| M & M Carnot |
| M & M Excavating Co. Inc. |
| Monarch Welding & Engineering, Inc. |
| Monroe Plumbing & Heating Company |
| Motor City Electric Co. |
| MPS Group, Inc. |
| MSL Mechanical Contractors |
| Murray Painting |
| MUST Careers |
| MUST Safety Program |
| MUST Safety Program-Office |
| MUST Workforce |
| M.W. Morss Roofing Inc. |
| Myers Plumbing & Heating Inc |
| Nagle Paving Company |
| National Enclosure Company LLC |
| National Environmental Group, LLC. |
| National Industrial Maintenance Inc. |
| National Roofing & Sheet Metal Co., Inc. |
| Navetta Mason Contractors, Inc. |
| NECA Southeastern MI |
| Nedrow Refractories Co. |
| Nelson-Mill Company |
| Nerds Express Inc |
| Newkirk Electric Associates, Inc. - Muskegon |
| Newton Crane Roofing Inc. |
| Next Generation Environmental, Inc. |
| Niemi Corporation, The |
| Niles Industrial Coatings LLC |
| NKC Conveyor Installation Co. |
| Noble Fence Co. |
| North American Dismantling Corp. |
| Northeast Indiana Carpenters & Millwrights JATC |
| Northern Boiler Mechanical Contractors, Inc. |
| Northern Electrical Testing |
| Nova Architectural Glass |
| Novi Wall Inc |
| Oakland Corridor Partners |
| Ohio Concrete Sawing and Drilling, Inc |
| Operating Engineer Drug Fund - AGC/CAM |
| Operating Engineer Drug Fund -GLFEA |
| Operating Engineers LMEC |
| Operating Engineers Local 324 |
| Operative Plasterers & Cement Masons Local 514 |
| Orion Waterproofing, Inc |
| Oscar W. Larson Co. |
| Otis Elevator, Co. - Grand Rapids |
| Otis Elevator Company-Farmington Hills |
| Overhead Conveyor Co. |
| Palmer Installations |
| Palmer Moving & Storage |
| PCP - TB |
| PEA |
| Pearson Equipment & Service Corp. |
| Perfect Polish Inc. |
| Permasteelisa North America Corp |
| Peterson Glass Company |
| Phantom Fire Protection |
| Phoenix Contractors Inc. |
| Phoenix Environmental Inc |
| Phoenix Machinery Movers, Inc |
| Phoenix Refrigeration Inc. |
| Pipefitters Local 333 |
| Pipefitters Local 636 |
| Pipefitters Local 636 Drug Fund |
| Pipefitters Local # 671 |
| Pipefitting Industry Training Center |
| Pipe Systems, Inc. |
| Plasterers Fund - ACT |
| Plumbers and Steamfitters Local 85 |
| Plumbers & Pipe Fitters Local 370 |
| Plumbers - Pipefitters Local Union 190 |
| Plumbing Industry Training Center |
| Pollock Plastering Inc. |
| Pomponio Construction Inc. |
| Posen Construction, Inc. |
| Positive Energy |
| Poured Brick Wall Inc |
| Power Process Piping |
| Power Techniques Inc |
| Power Vac of Michigan Inc |
| Prater Commercial Carpentry |
| Precast Services, Inc. |
| Precision Abatement LLC |
| Precision Electrical Contracting, Inc. |
| Precision Interiors LLC |
| Precision Measuring, Corp. |
| Premier Caulking |
| Professional Sprinkler |
| Progressive Mechanical, Inc. |
| PRO Image Facility Services Inc. |
| Pros Services Inc. |
| Pro Trenching Inc. |
| Pullman-SST |
| Pumpco LLC |
| Pushman Construction Services LLC |
| Quality Roofing, Inc. |
| Ram Construction Services |
| Rand Environmental Services, Inc. |
| Rand Industrial Insulation LLC |
| Rauhorn Electric, Inc. |
| Raymond Excavating Company |
| Raynor Overhead Door Corp. |
| RBE, INC. |
| RCB Industries, Inc. |
| R. C. Hendrick & Son, Inc. |
| Redinger Steel Erectors, Inc. |
| Redline Demolition |
| Regis Construction LLC |
| R.E. Leggette Company |
| Rene Vanassche & Sons Co. |
| Renton Electric Co. |
| RESA Service LLC f.k.a. Dymax Service |
| Resilient Floor Layers/ACT |
| Resource Mechanical Insulation |
| Rival Insulation LLC |
| R.L. Bondy Insulation, Inc. |
| R.L.C., Inc. |
| R.L. Coolsaet Construction |
| R.L. Deppmann Co. |
| R.M. Electric, Inc. |
| RMF Nooter |
| Road Fabrics Inc |
| Road Sprinkler Fitters Local 669 |
| Robertson Morrison Inc |
| Rockworks, LLC |
| Roemer Utility Services LC |
| Rohrscheib Sons Caissons, Inc. |
| Roncelli, Inc. |
| Roofers Local 149 Mid-Michigan JATC |
| Roofers Union Local 149/ SMRCA JAC School |
| Roofers Union Local # 70 - JATC |
| Roofers,Waterproofers & Allied Workers Local 149 |
| Rosati Masonry Co. Inc. |
| Rotor Electric Company |
| Royal Oak Millwork |
| Royal Roofing Company, Inc. |
| Royal West Roofing |
| R & R Construction Services, Inc. |
| R R D Construction Company |
| RSK Excavation LLC |
| Rudolph/Libbe, Inc. |
| Russell Plastering Co. |
| R.W. Mead & Sons |
| S A Comunale - Ohio |
| Safway Services Inc. - Detroit |
| Sani Vac Service |
| Saylors Inc. |
| Scaffolding, Inc. |
| Scheck Mechanical Corporation |
| Schena Roofing & Sheet Metal Co., Inc. |
| Schiffer Mason Contractors Inc. |
| Schindler Elevator Corp. |
| Schnabel Foundation Company |
| Schreiber Corporation |
| SDI Exterior Systems, LLC |
| S & D Mechanical Services Inc. |
| Seaway Mechanical Contractors |
| Seaway Painting LLC |
| Secure Door LLC |
| Seguin Morris USA Inc |
| S.E. Kalchik Mechanical, Inc. |
| SER Metro Detroit |
| Service Construction L.L.C. |
| Service Control, Inc. |
| Service Engineering, LLC |
| Set Duct Manufacturing Inc |
| SG Construction Services |
| Shambaugh & Son |
| Shaw Electric Company |
| Sheet Metal Local 292 |
| Sheet Metal Local7 Zone1/Five Cities Association |
| Sheet Metal Workers Local 7 Zone 2 JATC |
| Sheet Metal Workers Local 7 Zones 3 &4 |
| Sheet Metal Workers Local 80 |
| Sheet Metal Workers Local 80 Training Center |
| Shock Brothers Floorcovering, Inc. |
| Sieler Construction Inc |
| Siemens Building Technologies, Inc. |
| Signature Contracting Group |
| Simone Contracting Corporation |
| SimplexGrinnell Fire Protections Systems Company |
| Site Development, Inc. |
| Siwek Construction Company |
| Skanska USA Building Inc |
| Skylight Consultants of America, Inc |
| Skyline Glass Company |
| Skyline Painting, Inc. |
| Sky Reach, Inc. |
| Slifco Electric, L.L.C. |
| SMACNA Metropolitan Detroit Chapter |
| SME |
| Smith Brothers Electric |
| S&N Drywall |
| Sobania Inc. |
| Solid Platforms Inc. |
| Songer Steel Services, Inc. |
| Spalding DeDecker Associates, Inc. |
| Spence Brothers |
| Spicer Group, Inc. |
| Sprinkler Fitters Local #704 |
| Stafford-Smith |
| State Group Industrial (USA) Limited |
| Stationary Operating Engineers Local 324 |
| Stenco Construction |
| Stephenson Electric Co. |
| Sterling Erectors Inc. |
| Sterling Industrial Services, Inc. |
| Stony Creek Services, Inc. |
| Streamline Electric Inc. |
| Strut Tech Systems LLC |
| Stuart Dean Co Inc - Eastern Great Lakes |
| Summit Fire Protection Inc. |
| Summit Roofing, LLC |
| Superior Demolition Company, Inc. |
| Superior Electric Great Lakes Co. |
| Superior Electric Tri-County |
| Superior Excavating Inc. |
| Swan Electric Company, Inc. |
| Swanworks,Inc. |
| Syenergy Engineering |
| Systemp Corporation |
| Systems Enterprise Corporation |
| S & Z Sheetmetal, Inc. |
| Telecom Technicians Inc. |
| TempCo Mechanical Contractors, Inc. |
| Tenmile Creek Excavating LLC |
| TEST Company |
| Testing Engineers & Consultants, Inc. |
| T. F. Beck Company |
| The Boldt Company |
| The Cadeira Group |
| The Talbot Corporation |
| Thiel Electric, Inc. |
| ThyssenKrupp Elevator Company |
| Ticon, Inc. |
| Timmer Construction Co. |
| Titus Welding Company |
| T & M Asphalt Paving,Inc. |
| Toledo Caisson Corporation |
| Tom Furnari Painting LLC |
| Tooles Contracting Group, LLC. |
| Total Flow Control LLC |
| Total Foundations |
| Trane, a business of Ingersoll Rand |
| Trend Carpentry LLC |
| Tre Torri Construction Inc. |
| Triangle Electric Co. |
| Tri-City Groundbreakers Inc. |
| Trident Insulation Services LLC |
| Tristar Fire Protection |
| Tri State Industrial Floors, Inc |
| Tri-Steel Inc. |
| Triton Fire Group, Inc. |
| Turner-Brooks, Inc. |
| Turner Construction Company - Detroit |
| UL/PureSafety |
| Ultimate Corrosion Control, Inc |
| Union Caisson |
| Universal Glass & Metals, Inc. |
| Universal Piping Industries |
| Universal Wall Systems, Inc. |
| Upper Peninsula Carpenter/Millwright Drug Fund |
| Urbans Partition & Remodeling Co. |
| URS Corporation-E & C Division Automotive |
| Utilities Instrumentation Service, Inc |
| VanAmburg Carpentry and Millwork Inc. |
| Van Ert Electric Company Inc |
| Vanguard Mechanical Services Inc |
| Ventcon, Inc. |
| Vertex Steel, Inc. |
| Veterans Utility Services DBA Amerivac |
| VFP Fire Systems DBA W M Crook Fire |
| VM Duct Services LLC |
| W-3 Construction Company |
| Walbridge |
| Walbridge Concrete Services |
| Walbridge Equipment Installations |
| Walbridge Industrial Process |
| Walbridge - Out of Area |
| Walbridge Southeast |
| Walsh Construction Company |
| Washington Group - Flint |
| Washington Group - Lansing |
| Watson Bros. Service Co. |
| Wayne County Airport Managerment |
| WCI Construction Inc. |
| Webb Mechanical & Electrical Contr |
| Weigand Construction Co Inc |
| Weinstein Electric Company |
| Weiss Construction Co., LLC |
| Wendling Sheet Metal, Inc. |
| Western Mechanical Contractors, Inc. |
| West Metro Door & Window Inc |
| Westwood Carpentry Company |
| W & G #2 Ann Arbor |
| W & G #2 Pontiac |
| W & G LLC |
| W & G LLC Ann Arbor |
| Whaley Steel Corp.-Mio |
| W.H. Canon, Inc. |
| William E. Walter Inc |
| William Reichenbach Company |
| Williams Electrical & Telecommunications Co. |
| W. J. ONeil Company |
| Wolverine Fire Protection Co. |
| Wolverine Masonry & Restoration Services |
| Wolverine Steel Erectors, Inc. |
| Wolverine Stone Co. |
| Wolverine Tractor and Equipment Co. |
| Wood Refrigeration Co. |
| Woods Interiors |
| York International |
| Z Contractors Inc |