Under Thai Law, his employment status become open-end from 1 April 2014. For the redundant, even if we pay him the severance plus three months advance notice, he still has right to against the company the unfair dismissal just in case.
His contract was made under Thaiwah Plaza (TWPL) started 1 April 2012, so his year of service with TWPL is 3 years and 10 months