Fatigue - excessive overtime may make workers tired.

Avoid allocating excessive overtime to shift workers, particularly those working at night.

Carpenter's anxieties were compounded by the excessive overtime on the project.

"You'll be pleased to learn that I've managed to get you off the hook regarding the excessive unauthorized overtime."

A factor in this was excessive overtime with many signalmen working 7 days a week for a month.

A working culture which allows excessive overtime encourages sub-standard work, and poor inspection.

It hopes to make a fresh attempt to limit excessive overtime, heavily criticised in the report.

BR has had to rely on staff working excessive overtime to carry out maintenance and repair work.

To help guard against any excessive overtime, many employers:

"Even if the problem of excessive overtime is immediately corrected by management," he said, "its legacy will be felt for decades."