Or the VPN at work might not be able to handle everyone working at home. That seems likely the case.
The paid time off for sick days, yes it's very needed, but haven't we all seen people come into work sick even so? So we have 3 paid sick days a year, which is the legal minimum in CA for full time non-contract work I believe (I also save up at least a couple vacation days for sickness, and I never even get sick almost, like once in the past 4 years or something, but saving up for once in a blue moon). But despite having *some* sick time people are always coming in sick even so and it's that way everywhere even where there is a more generous 5 sick days a year.