Spectra (SOS) | Services- Finance Solutions | HR Solutions | Labour Compliance Spectra was established in 2006 with an aim is to support small and medium enterprises (SMEs). SOS offers start-Up solutions for SMEs including finance solutions (accounting services, accounts payable and receivable, income tax consulting, GST services), HR solutions (payroll services, recruitment service- RPO, manpower services, HR audit), labour compliance (labour codes 2020, contractor compliance, compliance audit, compliance reporting).