He said both parties would now go to mediation before the Employment Relations Authority intervened if the case got to that stage.
"The longer negotiations drag, the more difficult things become because if the company goes into liquidation or receivership, our members will have to queue up in order to claim their entitlements."
Mr Reid said the company's attitude towards its redundant workers was disappointing.
He has called on regulators such as the Companies Office and the Ministry of Business to step in and hold the directors of Smith and Davies and its subsidiaries to account.
"No one appears to know what is happening. The Companies Office has refused to investigate alleged irregularities without an official complaint while the issue does not even appear to be on the radar of the Ministry of Business, Innovation and Employment".
"If workers do something wrong they are liable for warnings and even dismissal. It seems that companies can flout the Companies Act, the Employment Act and other acts with impunity. Why will no government agency investigate allegations the company is trading while insolvent?" Mr Reid asked.
"Regulators need to step in and regulate. If they refuse then politicians need to step up and clarify the law".
Smith and Davies' directors Andrew Chalmers and Zane Cleaver did not respond to questions by edition time.