Inspectors soon found staff were working more than 80 hours a week while being paid for less than half that.
One of the employees provided recorded phone conversations in which Samuel suggested he could have someone cut off a staff member's limbs and harm his family.
When suspicion fell on another man as an informant, the business owner told him ''he needs to prepare for his parents' funeral in Sri Lanka''.
Weeks later there was another call from an associate of Samuel telling the former bakery employee to drop the case, advising him ''people were watching him and that it would be 'very bad' for he [sic] and his wife if [he] went ahead with the case''.
The Labour Inspectorate calculated the three workers were owed more than $230,000 in wage arrears.
Among aggravating factors, it highlighted the systematic theft of the workers' wages to pay for accommodation and food; the ''appalling conditions'' in which the workers were expected to live; the $10,000 premium taken from one of the workers; and Samuel's attempts to transfer blame for his actions on to his accountant, his previous lawyer and the workers themselves.
Samuel claimed workers stayed longer than their shifts stipulated to wait for flatmates or to use the high-speed internet.
His description of his actions as ''inadvertent and unintentional'' was firmly dismissed by Dallas.
''This is completely overwhelmed by the evidence before the authority and requires, and deserves, no further consideration,'' he said.
Samuel, providing two years of bank statement for his bakeries, claimed his precarious financial position should result in a reduction of the penalties imposed. A hefty debt would mean he would be forced to cease trading, he said.
The inspectorate suggested the bank statements should be ''viewed with caution'' since they were unsigned and contained a broad disclaimer that accountants who compiled them were not liable for any inaccuracies.
Samuel's plight could hardly have been a surprise, Dallas said, and rejected his pleas for leniency.
His home, bought in 2017, had appreciated by $250,000 alone, he noted.
''Mr Samuel has been on notice for a long time that one day he would likely face the prospect of having significant penalties imposed on him and/or his businesses ... by the authority.''
Along with the wage arrears, he imposed penalties of $158,000, $19,000 of which would go to staff.
A decision on Perera's culpability was postponed until the Court of Appeal released its ruling on another relevant case.
