Sadly, it remains necessary to strive for safe working environments and fair pay for millions of workers around the world.
Child labour remains a reality in some counties and slavery is yet to be eliminated, despite being illegal in most countries.
Unpaid and voluntary work is yet to be counted as part of actual gross domestic production.
Twelve hour days, sometimes even longer are the norm in some industries.
We may have come a long way since the days of sweated labour and "dark satanic mills"' but there remains much room for improvement.
Never should we take for granted hard won conditions, such as sick leave, bereavement leave, paid holidays, let alone equal pay for women and men, carers and family leave, even lunch and tea breaks.
If you enjoy decent conditions of work, thank trade union activists who have fought hard to improve conditions for their members.
Think what you might do today, to advance the quality of life for workers in less fortunate circumstances, be it via joining a union yourself, or supporting 'fair trade' products.
Happy May Day!