Many federal employees will pick up their first paychecks of 2000 and not see the much-ballyhooed 4.8 percent general schedule average raise taking effect this month. That’s because the raise is effective starting with the first full pay period beginning “on or after” January 1 — not on January 1. Most federal employees are paid on two-week cycles but those cycles vary from place to place, so the actual raises will appear in paychecks at various times over the next few weeks. Increases in both the across-the-board (3.8 percent) and locality (averaging 1 percent) components are effective at the same time.