Hi,
The applicability of PT will definitely come under the purview of the local act. However, when the organization does not have any place of business and employees are deputed to client locations, the applicability of the act depends on where the salary is being paid. Additionally, for the employer to get registered, they should have a shop act/trade license, which are mandatory requirements. When employees are deputed, the question of applying for these licenses does not arise. Therefore, it is desirable to deduct the tax from the place where the salary is being distributed instead of avoiding tax payment.
Regards,
gk