Employco Group Ltd.

Westmont

5,104

8,342

Business process outsourcing

Portillo Restaurant Group

Oak Brook

3,226

3,301

Operator of Portillo's Hot Dogs, Barnelli's Pasta Bowl, Key Wester Fish & Pasta House, Luigi's House

Tandem Professional Employer Services Inc.

Oak Brook

2,027

2,423

Outsource human resource functions for companies

Veluchamy Enterprises

Downers Grove

1,500

3,000

Direct marketing, banking, real estate

Altivity Packaging LLC

Elk Grove Village

1,300

8,200

Manufacturer of packaging, recycled paperboard, inks and coatings

Inland Real Estate Group of Cos.

Oak Brook

1,065

1,378

Commercial real estate developer and financier

Ace Hardware Corp.

Oak Brook

1,000

4,976

Retailer-owned hardware cooperative

Harlem Furniture LLC

Lombard

7,73

773

Retail furniture

Fellowes Inc.

Itasca

7,22

1,224

Global distributor of paper shredders, binding and laminating equipment, desktop accessories and record storage solutions.

Elkay Manufacturing Co.

Oak Brook

650

4,700

Manufacturer of stainless-steel sinks, water coolers, wooden kitchen cabinets and faucets

Wilton Products Inc.

Woodridge

622

685

Manufacturer of consumer products, housewares and home accessories

Jel Sert Co.

West Chicago

600

600

Manufacturer of powdered soft drink mixes, juice drinks, ice pops and milk flavoring straws

Eby-Brown Co. LLC

Naperville

560

2,350

Wholesale distributor of convenience products

Volvo Sales & Service Center Inc.

Lisle

525

525

Auto dealership

Duchossois Industries Inc.

Elmhurst

500

5,100

Defense products, garage door openers, venture capital and private-equity investments

Aspen Marketing Services Inc.

West Chicago

462

642

Marketing services agency, handling direct, digital and event marketing capabilities

Walter E. Smithe Furniture Inc.

Itasca

450

475

Furniture retailer

Neumann Homes Inc.

Warrenville

324

411

Homebuilder

AIT Worldwide Logistics Inc.

Itasca

309

780

Global transportation and logistics services provider

Great Kitchens Inc.

Addison

300

300

Manufacturer of pizza and appetizers for retail and food service

Continental Web Press Inc.

Itasca

300

500

Commercial printer

Ty Inc.

Westmont

250

600

Manufacturer of toys and collectibles

Optimum Nutrition Inc.

Aurora

238

311

Manufacturer, distributor and brand owner of nutritional supplements

Phoenix International Freight Services Ltd.

Wood Dale

230

1,500

International freight forwarding, logistics, transportation, customs brokerage

Tuthill Corp.

Burr Ridge

207

2,122

Manufacturer of industrial equipment

Semblex Corp.

Elmhurst

204

219

Manufacturer of industrial fasteners

Quality Screw & Nut Co.

Wood Dale

185

360

Manufacturer and distributor of fasteners and industrial hardware

Al Baskin Co.

Woodridge

180

310

Apparel retailer; parent of eight-store Mark Shale chain

Wozniak Industries Inc.

Oakbrook Terrace

175

300

Manufacturer of forged, stamped, fabricated and machined metal components

Associated Material Handling Industries Inc.

Carol Stream

168

346

Raymond Forklift distributor, forklift parts, service, rentals, storage, warehouse design

Boler Co.

Itasca

160

3,600

Manufactures truck and trailer suspension systems

Illinois Auto Electric Co.

Aurora

160

250

Sales and distribution of transportation, industrial and outdoor care products

George Sollitt Construction Co.

Wood Dale

150

150

General contractor and construction manager

Emkay Inc.

Itasca

145

165

Vehicle leasing and fleet management

OEC Business Interiors Inc.

Elmhurst

132

135

Contract furniture business

Henricksen & Co.

Itasca

105

185

Contract office furniture dealer

Montalbano Builders Inc.

Oakbrook Terrace

100

175

Homebuilder

SEI-CCS LLC

Oak Brook

100

600

Help desk and sales support services

FCL Builders

Itasca

85

85

General contractor

Safeway Insurance Group

Westmont

80

430

Property and casualty insurance

Magneco/Metrel Inc.

Addison

79

153

Manufacturer of refractories

Wiseman-Hughes Enterprises Inc.

Wheaton

73

73

General contractor

Kensington Homes Inc.

Naperville

58

58

Residential developer, homebuilder

Corporate Concepts Inc.

Lombard

53

53

Office furniture dealer

Gerber Plumbing Fixtures LLC

Woodridge

50

250

Manufacturer of vitreous china and cast-iron plumbing fixtures, special-finish faucets and fittings for the residential, builder, hospitality and commercial markets

McDonalds

Oak Brook

465,000

Fast Food Restaurants

Laidlaw Int.

Naperville

62,500

Bus Services

OfficeMax Inc.

Naperville

36,000

Office Supplies

Molex Inc.

Lisle

32,400

Electronic Components

ServiceMaster Co.

Downers Grove

32,000

Consumer Services

Nalco Co.

Naperville

11,100

Water Treatment

Arthur J. Gallagher & Co.

Itasca

8,757

Insurance Brokerage

Sirva Inc.

Westmont

5,930

Relocation Services

Federal Signal Corp.

Oak Brook

5,400

Safety and Security Systems

DeVry

Downers Grove

4,800

Education Services

IPSCO

Lisle

4,400

Steel

Aftermarket Technology Corp.

Downers Grove

4,000

Auto Parts Equipment

Nicor

Naperville

3,900

Gas Distribution

Tellabs

Naperville

3,713

Communication Equipment

AAR Corp.

Wood Dale

3,300

Aerospace

MAF Bancorp Inc.

Clarendon Hills

2,152

Bank Holding Company

First Midwest Bank

Itasca

1,892

Commercial Banks

Hub Group

Downers Grove

1,513

Home Builder

Inland Real Estate Group

Oak brook

1,289

Real Estate Investment Trust

Great Lakes Dock & Dredge

Oak Brook

943

Commercial and Industrial Demolition

Westell Technologies

Aurora

858

Telecom Equipment

RC2 Corp.

Oak Brook

821

Toys / Collectibles

FTD Group

Downers Grove

745

Floral Products and Services

Cabot Microelectronics

Aurora

742

Semiconductor Equipment

Midas Inc.

Itasca

550

Automotive Retail

bank Financial Corp.

Burr Ridge

452

Bank Holding Company

Calamos Asset Management

Napeville

380

Investment Services

Chicago Rivet & Machine

Napeville

261

Industrial Machinery

Vasco Data Security

Oakbrook Terrace

184

Online Security Products