Silver Spring Labor Organizations 8630 Fenton St # 400 Official website of the International Federation of Professional and Technical Engineers (IFPTE), AFL-CIO and CLC, a progressive labor union representing more than 85,000 men and women in professional, technical, administrative and associated occupations. As an affiliate of the AFL-CIO and the Canadian Labour Congress (CLC), IFPTE is a diverse union representing employees in a wide variety of occupations in three distinct business sectors. Silver Spring MD Labor Organizations International Federation Pro www.ifpte.org IFPTE.org IFPTE International Federation of Professional and Technical Engineers AFL-CIO CLC labor union union canadian labour congress clc labor IFPTE.org IFPTE International Federation of Professional and Technical Engineers AFL-CIO CLC labor union union canadian labour congress clc labor Business Reviews International Federation Pro Testimonials