The Treasury may be more famous for its growth rates and prudence than partying, but the office knees-up may swing a little more, thanks to this Budget.
This is because Gordon Brown has increased the amount companies can spend on their staff tax-free - it could mean the difference between sparkling wine and champagne.
Under existing Inland Revenue rules, companies can spend up to £75 a head on Christmas parties tax-free.
The chancellor now plans to double this amount.
Leaving parties could also become more generous.
Under current rules, an employer can make a tax-free award such as a clock or watch, but not cash, to an employee in recognition of the length of their service.
The employees must have a minimum of 20 years with the employer and the gift can be valued at up to £20 for each year of service.
The chancellor plans to raise this to £50 for each year.
Other gifts given by third parties, such as clients, can be tax-free up to £150.
This amount is to be lifted to £250.