Ken Wiles was refused toilet breaks on runs from Port Glasgow to Coventry during the time he worked for UK Express Delivery who take on workers as self-employed agents.
A former driver for a delivery firm used by Amazon claims “horrendous” working conditions had a devastating effect on his health.
Ken Wiles worked for UK Express Delivery and claims drivers were told not to let their speed drop on motorways to meet deadlines.
He said he was pressured into working seven days a week, which left him exhausted and suffering depression.
We revealed last month how drivers are forced to work for weeks without getting paid as their wages go towards a £1500 “retainer fund”.
The firm avoid basic employment laws by taking on workers as self-employed agents.
Ken worked for the company from December 2015 until last June and alerted Scottish Lib Dem leader Willie Rennie to how staff are treated.
Ken, 56, who was recovering from a suicide attempt when he started work, said: “It just got on top of me. I nearly threw myself off a bridge the previous year and had treatment and counselling.
“When I started working with UK Express Delivery, I believe it caused my depression to resurface. Working for them was horrendous.”
Ken, from Yarm in Yorkshire, said drivers were under constant scrutiny and had trackers on their vehicles.
He added: “We were told not to allow our speed to drop on the motorway.” He also claims he was told off for using the bathroom on a 335-mile journey from Port Glasgow to