Employees at GeoCities in Marina del Rey will find out today whether they will have jobs with the company after it completes it $3.9-billion merger with Yahoo Inc. At least some of GeoCities' roughly 300 employees are expected to receive pink slips, and some others will be asked to relocate to Yahoo's headquarters in Santa Clara. The news will be relayed at an off-site meeting this morning, according to people familiar with the plans. GeoCities executives had no official comment Monday. The merger is on track to close late this month or in early June. GeoCities shareholders are scheduled to vote on it May 28.