The Usual morning commute in Brooklyn got an unexpected visitor yesterday: Mayor Bloomberg, standing at a Linden Blvd. Bus stop, waiting for the B13.

The mayor was spending some quality time with Annie Davis, Health Department security guard, whose union wanted him to sample a slice of life with one of its members.

“We don’t have sick days. We don’t get paid for holidays.  It’s not even so much our wages, it’s the benefits,” said Davis, a 54-year-old mother of six.

Davis makes $11.75 an hour, with no medical benefits for her asthma inhaler.

Her union, SEIU Local 32BJ, wants a better deal as it prepares to endorse a candidate for mayor.  To get its blessing, the union persuaded the two leading contenders to walk in its members’ shoes. 

Davis is one of 1,100 guards at 20 city agencies who work for private contractor Allied Barton, which said in a statement that the compensation is “comparable” to other like firms.

The union is threatening to strike this month if they can’t get a better deal.

Bloomberg wouldn’t take sides, telling reporters later that “the mayor should not be involved between a union and a company’s business negotiations.”

He was more cautious than City Controller William Thompson, who last week spent time at the Brooklyn Municipal Building with guard Lateef Rivers, 25. 

Thompson said he would push city subcontractors to pay a living wage and provide health care – in part so workers like Rivers didn’t end up in city hospital emergency rooms.

Mike Fishman, president of 32BJ, said, “Anyone who wants to be mayor should know firsthand how hard it is to make ends meet in New York City.”