There is no legal max temperature at the moment. Unions have been trying to address this matter for a long time.
This is from 2005 refering to attempts made in 2002 to resolve the issue.
The TUC says nothing has changed since 2002 and its demands remain the same. Roasting offices cause a lack of concentration and nasty accidents, with slips and trips the major injury, it says.
And prolonged concentration at a VDU in a heat wave will have workers stressed, tense, exhausted and probably suffering headaches and eye strain. It also warns that irritability raises the incidence of violence.
For those doing manual work, the thermal threats are said by the TUC to be even worse: fatigue, extra strain on the heart and lungs, dizziness and fainting, or heat cramps due to loss of water and salt. Hot, dry air can increase the risk of eye and throat infections, and breathing problems such as asthma and rhinitis.
TUC General Secretary Brendan Barber said today: "Employees should not have to suffer in sweat at work. There is a legal responsibility on employers to make their staff safe but this should be backed up with a legal limit on how much heat workers have to bear."
The TUC wants a maximum working temperature of 30oC (86oF) – and 27oC (81oF) for those doing strenuous work. When the heat hits the maximum, employers should reduce the temperature. It recommends fans or air conditioning. Workers whose exposure to heat cannot be reduced should be provided with adequate breaks and offered job rotation, it suggests.
Using the underlined ask for more fans if not hit the boss and blame it on the heat
