- AB INDUSTRY S.A. (15)
- Accenture (42)
- Adecco Solutions AS (10)
- AGATA Spółka Akcyjna (19)
- Agencja Zatrudnienia KS Service (232)
- Aluwind Sp. z o.o. (17)
- Amway Business Centre Europe (28)
- Apleona Polska sp. z o.o. (13)
- APN Plus Sp. z o.o. (53)
- ArcelorMittal Shared Service Centre Europe (17)
- Asistwork Sp z o.o. (58)
- ASMO Solutions (389)
- ATERIMA HR (14)
- ATERIMA WORK (59)
- ATERIMA WORK FR (36)
- AYP Sp. z o.o. (14)