During the course of a year, many occasions warrant a company-sponsored business gathering or party. Many federal holidays are celebrated by parties in or out of the office. At these times and others, an official invitation may be necessary to ensure that all coworkers know all essential information about the party.
[Company's name] is pleased to announce a business gathering at [location] on [date]. The festivities will begin at [time] and will end at [time]. You do not need to bring anything to this party; the company is fully funding the occasion. Each employee is allowed to bring one adult guest.
Please contact [Name] to confirm that you will attend the function and to inform him whether you will bring a guest. We look forward to this time of fun and food, and we hope you will attend.