Late fee for late rent payment?

[Paul Sandhu]

One of my bigger houses has 6 real beds and 2 sofa beds.  The weekly rent is $1500.  There are 7 guys in there working day or night shift.  It comes out to $215 a person.  Yesterday was rent day.  4 guys paid me the rent for 6 of the people.  They told me the 7th person was at a bar, I never got his rent payment yesterday.  So today I have to go back to that house when he gets off work and get his $215. 

I feel like a late fee is appropriate, since the other 6 people managed to pay me on the rent day.  What do you think the fee should be?