- AB INDUSTRY S.A. (15)
- Accenture (42)
- AGATA Spółka Akcyjna (21)
- Agencja Zatrudnienia KS Service (248)
- Aluwind Sp. z o.o. (17)
- Amway Business Centre Europe (28)
- APN Plus Sp. z o.o. (48)
- ArcelorMittal Shared Service Centre Europe (17)
- Ardna Sp. z o.o. (11)
- Asistwork Sp z o.o. (56)
- ASMO Solutions (390)
- ATERIMA HR (14)
- ATERIMA WORK (58)
- ATERIMA WORK FR (34)
- AYP Sp. z o.o. (14)