TCS sees no impact from US green-card programme suspension on workforce strategy ↧ ↧ TCS sees no impact from US green-card programme suspension on workf... Tata Consultancy Services , India's top IT services ​exporter, said on Friday it does ‌not expect the US suspension of the Permanent Labor Certification (PERM) programme for IT companies to have ​any material impact on its workforce ​strategy or client engagements.