There are two badges, Enthusiast and Fanatic, for frequent participation on SE sites. They require every-day participation including Saturdays, Sundays, and holidays. Maybe Fanatic should really be termed "Addict".
For the more sane part of the population (following typical working-day patterns, having a family life, following religious practice of regular holidays etc.) there are no such badges.
Here are my suggestions:
- Silver badge "Workforce" Visit a SE site on 60 days during a 90 day period
- Gold badge "Hero of Socialist Labour" Visit a SE site on 200 days during a one year period
What do you think?
P.S. Those badges aren't meant as replacement for the Fanatic type of badges, they are meant as additional badges with different requirements.