MEXICAN fruit workers have asked Scots consumers to boycott berries sold in the Lidl supermarket chain amid allegations of slave labour, unsafe working conditions and harassment.

Lidl sells berries sourced by a US multinational called Driscoll’s which is the largest berry distributor in the world.

But in Mexico some 80,000 farm workers have been in dispute over working conditions and have called for a global boycott of the American firm.

Workers in San Quentin Valley, in Baja California state, allege that employment conditions amount to "neo-slavery" and that they earn just $6 a day for 12-to-15 hour shifts.

They have also complained about allegedly unsafe working conditions relating to the use of pesticides.

Last year violent protests broke out when strawberry pickers clashed with police in running battles that left buildings torched and dozens of people arrested.

Across the border in the USA, workers in Washington state have also complained about conditions and in 2013 they launched a series of walkouts and lawsuits over alleged labour violations.

According to the #Boycott Driscoll’s campaign protests were due to take place yesterday in Aromas in California, Tijuana in Mexico, Chicago in Illinois and New York, New York state.

Gloria Garcia, who's been leading the Mexican protest, told the Sunday Herald: "Driscoll's is a multinational company which operates in Asia, Europe, the America and who buys fruit worldwide from independent producers. In countries like USA and Mexico many irregularities and injustices have been encountered on farms where they sell fruit to Driscoll's, such as child labour, sexual harassment, pesticide use, non payment of wages, the avoidances of social security payments and many other abuses of labour rights.”

She continued: “Driscoll's assures us that if such abuses are found to be taking place on farms they source from they would stop buying from them. This proves that Driscoll's have the power to enforce structural changes, but to date it hasn't exercised this power. Putting pressure on Driscoll's in the UK would show that consumers want to put an end to these injustices along the supply chain and identity other injustices taking place in other countries throughout the world."

In response to the above allegations, Driscoll’s directed the Sunday Herald to its web page entitled Worker Welfare Commitment, which says the company is committed to working with independent growers to ensure that farm workers are treated with consideration and respect while paid a sufficient income to “live with dignity”.

Driscoll’s statement continues: “Our standards are based on the International Labor Organization (ILO) Conventions, Global Social Compliance Program (GSCP) Standards, Business Social Compliance Initiative (BSCI) Standards and a collaborative review of agriculture-specific standards from several non-governmental organizations. Driscoll’s has always required that our growers comply with all laws and regulations. In 2015, Driscoll’s adopted additional Worker Welfare standards that apply to all of our growers globally.”

The US firm added that it has a zero tolerance policy with regards to child labour, forced labour and any abuse and harassment of employees, and that it requires all its growers to comply with all laws and regulations.

Any breach of the above standards, Driscoll’s said, would result in the termination of a relationship with the company.

A spokesperson for Lidl said that as a responsible retailer it was continuously working to improve the welfare and working conditions of employees across its supply chain.

Lidl continued: “These allegations are extremely serious and as such we are currently investigating as a matter of urgency. We are in contact with the supplier to establish the facts and whether there is any validity to the claims but, in the timeframe given, we are not able to provide any further information. However, we shall share a comprehensive response once we have had the opportunity to fully investigate.”