For Linklaters, the day saw the launch of the ‘Change One Thing’ six-month challenge for all its employees, with a dedicated website for its staff to make its pledges.
Partners and senior associates alike have been pledging to cycle into work, use a mug instead of throwaway cups and even taking their biodegradables to put on their home compost heaps.
The UK base, and several international offices, also had the pleasure of watching An Inconvenient Truth, the Al Gore documentary about the state of global warming. This was preceded by a film of senior partner David Cheyne on what climate change means to the firm.
Eversheds has marked World Environment Day with a week of fun-filled green festivities, including the firm's café housing a fair trade market and today offering "no air miles food".
Eversheds is also having the ‘big switch off’, similar to Linklaters' ‘switch off campaign’, which encourages people to switch off their office lights and computers when they leave the office each day.
Norton Rose is the other big green firm, with new climate change partner Antony Hobley chairing a big investment conference in Westminster to mark the day.
A Norton Rose spokesman said that the firm has also shown the Al Gore film and handed out Norton Rose mugs in an effort to become green.
Clifford Chance had an internal display with leaflets and material handed out on energy saving and recycling information. A quiz was held with world environment day branded caps and bags to be won.
The importance of law firms marking World Environment Day comes following several firms formally committing to reducing their carbon footprint in the past six months, with Linklaters pushing its employees to become carbon neutral.