It's not a pittance, it's over £80 a week, and it's paid through his company - we're up to speed on this because since OH broke his kneecap, he too has been off work since February and as long as he puts his GP sicknote into his employer, they will pay his SSP for up to 28 weeks, until he's signed off fit again.
I think your OH's boss has got his figures wrong, he needs to speak to him again, it's all clearly laid out on the Benefits website (see factor's link below).