For more than 40 years, we've been sourcing over 300,000 staff for our clients.


Siam Rajathanee Company Limited was founded on May 17, 1976 by Mr. Mongkol  Vimolchalao, and began with agribusiness. Due to the rapid change in the world business trend, our executive management team had recognized the importance of cost reduction and efficiency improvement in workforce and, consequently developed and grown the business to ‘Outsourcing Services”. We have provided the service to both government and private sectors to help control their labour cost and to help reduce their responsibility in employees and vehicles management, so that they can operate more effectively.

For more than 35 years, our Business Principles will continue to evolve, adept, and utilize to concentrate on company’s core business activities by adhering to the standard set forth in the ISO 9001:2008 quality management system as “Highest Siamrajathanee’s Client Satisfaction Priorities”


  • One of Thailand’s leading Outsourcing Service; best quality and services
  • All Solutions One Outsource: Multi services and solutions to create significant value for clients
  • Providing highly qualified employees to help customers achieve their goals


  • To generate knowledgeable and skillful personal with international standard
  • To support employees’ learning and development, so that they can improve their services
  • To initiate new services to optimize customers’ satisfaction
  • To standardize working system to be fast, flexible and situation-adaptive
  • To build and maintaina high level of public trust and respect of our justice and service