I may have misunderstood, but my understanding is that the 90% of pay you get for the first 6 weeks of SMP is based on your weekly earnings for the eight weeks prior to your qualifying week, which is 15 weeks before your due date - so weeks 17 to 25 of the pregnancy? Is that right? If so, what happens if a specific (and unique) circumstance reduces your pay during that period? My union have called 14 days of strikes, all of which fall in that period for me. I think this means I would lose a huge chunk of that money (14/40ths of it) if I strike - is that right? I asked my union local branch and they said they didn't know (though they said they didn't think it would work like that, but didn't say why they thought this) and would get back to me, but they haven't yet and the strike is approaching in the next couple of weeks. If any knowledgeable people can help me to find the answer then I'd be very grateful!