It is supposed that his excessive labour in connection with this book hastened his death.

But increased productiveness is not secured by excessive labor amid unhealthy surroundings.

The physical labor was so severe, that some of the patients endured permanent physical damage from the excessive labor coupled with inadequate rest.

He knew that he could not go on much longer with this excessive labor unless he had some fat intake.

His excessive labors undermined his health, and for many years he suffered from epileptic seizures.

The Caucasus always had excessive labour, even in Soviet times.

Previously, industry trade groups attributed the higher costs in the city to excessive labor and landfill dumping expenses.

Thankfully, my wishes have not been frustrated, nor has my determination been broken by these excessive labors.

It now required long and excessive labor to condense within the chamber sufficient atmospheric air for the sustenance of life.

It seemed excessive labor; an unnecessary refinement for such a crude structure.