What schedule do Curiosity operators follow so Mars Time does not negatively impact their performance and health?

In the Choosing Mars-Time: Analysis of the Mars Exploration Rover Experience paper (2004), the NASA Ames Human Factors group recommends that those working on the Mars Exploration Rover mission should not work too many Sols in a row considering a Sol (Mars Time) is 40 minutes longer than a 24 hour day. After a number of days in a row Mars Time no longer is synchronized with people's circadian rhythm and degrades their work efficiency and well being.

The group recommended "members work no more than 4 shifts on Mars Time in a row, followed by several days off to allow enough time to recover from Mars Time operational shifts."

Is that the current schedule of the operators working on the Curiosity rover, or is there a different combination Mars Time shifts with days off?