There's a longer response from Caterham that claims that the July salaries have, in fact, been paid - not just on-time, but in actuality nearly a week early.
It's going to take a while to figure out who's mess this really is. It sounds like Caterham was set up similar to a company I worked for in the past (and was made redundant from). It is in fact actually several companies. One owns all the valuable assets (in this case, the licence to go racing and probably the factory and other physical stuff). Another manages the day-to-day running of the team (sponsorships and the like maybe). Yet another provides the staff. So it could all depend on which of these teams the new owners of the race team actually bought, and under what terms those staff were "supplied" to the team.
It's also likely those staff had no idea they weren't actually contracted to the team itself, as the various companies probably all have very similar names.
I saw bit's of that statement as well: http://www.autosport...rce=mostpopular
"Every individual currently employed by Caterham F1 Team was paid their July salary in full on 25th July, one week before it is formally due on the last day of the month, in this case 31st July."
I'm sure individuals currently employed have been paid in July. It's the 40-odd individuals that are not currently employed (because they were fired/layed off during July) that were probably owed at least some salary for July that are suing Caterham.