The average employee in Wales works an extra 6.2 hours per week - adding up to an extra £735m-worth of value to the Welsh economy.
"That's a huge amount of hours," said Rhianydd Wiliams from Wales TUC.
"We're asking employers to recognise these extra hours and maybe looking at better ways of managing time within the office so that people feel they can leave on time or have a proper lunch break."
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The 48-year-old lecturer was taken to the University Hospital of Wales, Cardiff, where he sadly died.
Fire crews were called to the Royal Gwent Hospital earlier to help doctors remove a steel ring spanner stuck on a man's genitals.
The Welsh Government has launched a new patrol boat to make sure fisheries and marine laws are enforced.