| Employer | State | City | |
| F E Moran, Inc. | Illinois | NORTHBROOK | View Profile |
| Facility Maintenance Services, LLC | Kansas | Wichita | View Profile |
| Facility Services Management, Inc. | Tennessee | Clarksville | View Profile |
| Fairmont Southampton | Outside North America | Southampton | View Profile |
| Falso Service Experts Heating & A/C | New York | East Syracuse | View Profile |
| First Service Networks | Maryland | Linthicum | View Profile |
| Fitzgerald Lighting and Maintenance | Illinois | Aurora | View Profile |
| Foley Company | Missouri | Kansas City | View Profile |
| Forest City Enterprises | Ohio | Cleveland | View Profile |
| Four C's Service, Inc. | California | Fresno | View Profile |
| Four Seasons Environmental | Ohio | Monroe | View Profile |
| Four Streams Services | Michigan | New Hudson | View Profile |