BUS bosses sent four Huddersfield drivers home in disgrace for not wearing a tie.
The four, who drive for First, were told they would not be allowed back behind the wheel until they put on the company tie.
All four went home and got the company neckwear before returning to work.
No bus services were disrupted.
Under a rule which came into force on October 1, First employees are now required to wear a company tie.
The rule says drivers have to wear the full company uniform, including tie, between October 1 and March 31.
From April to September drivers don't have to wear ties because of the warm weather.
They can even wear knee-length shorts at the wheel.
The dress code, nicknamed the 'short-sleeve rule' by staff, is a national agreement which covers all of First's 37 bus companies
A source at First said: "Some of the drivers who were sent home weren't happy. But it was an honest mistake, rather than trying to flout the rules.
"Some drivers aren't happy, full stop, at having to wear ties.
"Plus this has been the hottest October on record," the source added.
"If drivers have a real medical complaint about not wearing the tie then obviously this would be looked at."
Matt Davies, operations director for First buses in Huddersfield, said: "We expect a high standard of dress from our employees.
"Those who regularly fail to meet the standard may be asked to return home and collect their uniform before being signed on for duty.
"To cater for warmer weather our dress code allows ties to be removed and knee-length shorts to be worn between April and September and for short-sleeve shirts to be worn throughout the year."