system
Given the following post, respond as if you're commenting on Reddit:
human
[Aliens] Does a Marine's time in hypersleep count as time served?

For instance, Hudson famously had 4 more weeks on his contract. Would that take into account the weeks it would take to return from LV-426? How does the UMC deal with missions where the travel time is measured in years?
gpt
They don't really go into it, but we can assume that it'd be very hard to get someone to sign up for a 4 year stint if it could take 20 years to complete.  On the flip side, a 4 year stint is useless to the corps if it could be used up in one mission.  
Likely there's a calculation involved.  Time awake counts for so much, and hypersleep time counts for less, but not nothing.