A staple term of state-owned enterprise (
国企 guóqǐ) restructuring in the 1990s: workers kept on the payroll at reduced wages while their factory or post was idle. Distinct from
下岗 (xiàgǎng, fully laid off) and
失业 (shīyè, unemployed) —
待岗 implies you're still attached to the work unit, just waiting.