The American retail giant Walmart holds food drives in some of its outlets, but these aren't like the food bank collections you see in the UK.

These are for its own staff, or "associates".

Branches in Oklahoma and Ohio entreated low-paid workers to donate food items so "Associates in need" could enjoy Thanksgiving dinner.

A better solution is surely to pay staff a living wage so that they aren't dependent on the generosity of co-workers to get by. Yet in America even the national minimum wage is considerably lower than in the UK,and hasn't been increased for five years.

At home, similar problems exist. It cannot be right that Britain has so many working households living below the poverty line.

On the basis that the National Minimum Wage - currently £6.50 - has not kept pace with the rising cost of living, The Living Wage Foundation helps set a more realistic rate, which is currently £7.85 for those outside London. This figure is arrived at by a complex calculation, carried out by experts at Loughborough University, who balance rents and other costs, looking in detail at what households need to establish a minimum acceptable living standard. Employers can then commit to paying the living wage, ensuring every worker is paid an hourly rate sufficient to live on.

Dozens of Scottish companies are signed up - such as Falkirk Council to Glasgow Caledonian University, and Glasgow's SECC.

Now, after a deluge of pressure from its fans to follow the lead of rivals Hearts, Celtic FC have agreed to pay a living wage to all staff - although the club declined to commit to annual increases, as accredited LW employers.

The decision is still very welcome. Celtic have done the right thing.

But it is not just football clubs that need to look at their payroll, and it should not be up to Loughborough University to set a fair rate of pay for UK workers.

Take the example of care homes: some of our most vulnerable citizens, our relatives and loved ones, some suffering from dementia, are routinely looked after by dedicated staff who could earn a better rate of pay in a supermarket.

Other large sectors such as cleaning, catering, hairdressing and retail are also renowned for low pay.

Some businesses would find it difficult to pay the Living Wage, and it would be counterproductive if it cost jobs. But similar arguments were made against the minimum wage when it was introduced.

Since the minimum wage was established in 1999, much has changed, including a huge rise in part-time working and the arrival of "zero-hours" contracts. It is time for a more substantial review.

There is dispute about whether responsibility should fall to Westminster or the Scottish Government. Either way there is a need to revisit fair pay for all workers, through the existing minimum wage.

It could be done now. Celtic don't want an outside body to set their salaries. That is understandable, but there is a body that already has that right: the UK Government.