DH is about that age, and if he loses his job, we are in a world of hurt because our lifestyle requires his income, which is entirely on him (the big house, his car lease, the club memberships were effectively unilateral decisions by him). Without his income, we would have to make drastic changes, including listing the house. On the other hand, if I lost my job, whatever. Without my income, we would have to cut back on household help, save less, and change how we travel. But these are all choices he made as the primary earner. All I can and have done is create an emergency fund to hold us over for about a year if it happens.