Although strongly committed to a market economy, Saca expressed sympathy for labour, which led Flores to name him to head a commission that brought a small increase in the minimum wage.
Labour, which once supported HS2, is wavering.
"Therefore it is crucial that minimum labour standards are enforced," Metcalf concluded.
By abiding with the Ethical Trading Initiative (ETI) and implementing their Base Code that outlines minimum labour standards, companies can start to clean up their products and services delivered on the back off forced labour.
Where the Lib Dems had originally wanted a variable minimum wage which was lower in poorer regions, Labour introduced a national rate which it now pledges to peg to average earnings.
It is in microeconomics where Labour's plans go astray: a minimum wage, which could destroy jobs; a windfall tax on privatised utilities, which is arbitrary; signature of the EU's social chapter, which will increase employers' obligations to trade unions.
Mr Salmond said the national minimum wage, which was brought in by the UK Labour government and which benefits about 70,000 people in Scotland, had failed to increase in real terms in almost 10 years.
It's grown quite strong over the years, especially in cases when we start talking about the "unskilled labour" of minimum wage work, which often seems to be code for "the deserving poor".
Labour costs are too high, not least because the federal minimum wage, which applies in Puerto Rico, is almost as much as the average wage.
"The naming and shaming of unscrupulous businesses which flout the national minimum wage will be worthless unless ministers commit to properly enforcing the minimum wage, which they have so far failed to do," said Ian Murray, Labour's shadow minister for employment relations.
