If an individual is out of jail on parole, or avoided jail by being placed on probation, he/she can be charged with a probation or a parole violation for not complying with the conditions of his/her parole or probation.
Probation violation or parole violation does not automatically mean a jail sentence.

If an individual fails to report for mandatory drug testing, fails a drug test, fails to check in with your parole officer or probation officer or fails to report for community service or to complete your community service sentence he or she can be charged with a probation/parole violation.

However, if there are extenuating circumstances that contributed to your failure to comply with probation or parole. You have a right to bring evidence to your probation revocation hearing to prove those extenuating circumstances (such as ill health), or to defend against charges that are being made against you.