NRS 211.310
Credits for prisoner sentenced before October 1, 1991.
1.
For each month in which a prisoner who is sentenced to a term of imprisonment in a local detention facility before October 1, 1991:(a)
Appears by the reports required by NRS 211.150, to have been obedient, orderly and faithful, the sheriff of the county or the chief of police of the municipality in which the prisoner is incarcerated may deduct not more than 5 days from the term of imprisonment of the prisoner.(b)
Diligently performs his or her assigned work, the sheriff or chief of police may deduct:(1)
Not more than 10 additional days if his or her sentence is 270 days or more;(2)
Not more than 7 additional days if his or her sentence is 180 days or more but less than 270 days;(3)
Not more than 5 additional days if his or her sentence is 30 days or more but less than 180 days;(4)
Not more than 3 additional days if his or her sentence is 15 days or more but less than 30 days; and(5)
No additional days if his or her sentence is less than 15 days.2.
Deductions earned under paragraph (a) of subsection 1 for any period of time less than a month must be credited on a pro rata basis.3.
If, while incarcerated, a prisoner:(a)
Commits a criminal offense;(b)
Commits an act which endangers human life;(c)
Intentionally disobeys a rule of the jail or fails to return from assigned work within an allotted time; or(d)
Intentionally disobeys a rule or individual condition established pursuant to NRS 211.270,4.
Before any forfeiture under subsection 3 may occur, the prisoner must be given reasonable notice of the alleged misconduct for which the forfeiture is sought and an opportunity for a hearing on that misconduct.
Source:
Section 211.310 — Credits for prisoner sentenced before October 1, 1991., https://www.leg.state.nv.us/NRS/NRS-211.html#NRS211Sec310.