Staff at Microsoft's Thames Valley campus are no longer being urged to go home on time, as they had been told to do in June and July to "enjoy the sun".
For eight weeks, Microsoft upped the stakes in its battle against its long-hours culture by donating cash to children's charity the NSPCC for every worker who went home by 5.30pm.
During the campaign, Microsoft UK denoted £8000 to the NSPCC, the company's main corporate charity.
Speaking earlier in the summer, Neil Holloway, managing director at Microsoft UK, said: "UK bosses have to wake up to the dangers of creating an 'all work, no play' working culture - and we hope the Club 17:30 campaign will help add sun and fun into the equation."
A Microsoft spokeswoman told vnunet.com that the "fun in the sun" campaign was now over, but that Microsoft would be working on other charitable projects to replace it.
She said: "It was always a campaign with a beginning and an end, but Microsoft remains committed to a good work/life balance for its employees."
A Microsoft UK internal survey conduced in May showed that six out of 10 of its office workers would opt for a shorter working day over a big pay rise, and 75 per cent believed it was up to companies to encourage employees to leave on time.
The firm certainly seems to have a long-hours culture. Half of all workers at the Thames Valley campus said they stayed late more often than not, while one in six claimed to stay in the office until after 10pm at least once a month.
The same amount said they would rather spend an hour playing solitaire than be seen to be the first to leave.
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