As Right to Work attorneys' efforts [1] on behalf of Pomona nurses grab headlines [2], one noteworthy comment comes from SEIU union official Sue Weinstein. Aside from the issues of threats of fines, arrests, and jail:
As for the dues, Weinstein said the local has a policy not to collect dues retroactively.
The union operatives that widely distributed this flier [3] (see underlined portion) must be unfamiliar with that policy.
Links:
[1] http://www.nrtw.org/blog/union-officials-nurses-strike-or-face-fines-jail-arrests
[2] http://www.dailybulletin.com/ci_7346246
[3] http://www.nrtw.org/blog/files/nrtw/SEIUFlier.pdf