Catherine Zeta-Jones and Michael Douglas continue to work hard to fix their marital problems.

The pair, who admitted they went through a rough patch this summer, were spotted “laughing and enjoying each other’s company” at lunch this past weekend at Ocean Grill on the Upper West Side. Spies tells us the couple, who separated in August after 13 years of marriage, were with their daughter, Carys, 10. Witnesses said they were “really focused on her” during the meal but were also “laughing together.”

According to unconfirmed reports, Douglas has been going to Zeta-Jones’ place for breakfast with his children (the couple also have one son, Dylan, 13) when he’s in Manhattan and dropping by in the evening to watch TV with them.

It’s been a tough year for the couple. Zeta-Jones went into treatment for bipolar disorder in April, just before she and Douglas split. Then, the “Wall Street” star told the Guardian newspaper his throat cancer was HPV-related and came from performing oral sex. But in October, Douglas, wearing a wedding ring, said of his relationship with Zeta-Jones, “Things are great. Onward and upward,” while promoting his movie “Last Vegas.”

Earlier, at the Emmys, he said he hoped they can save their marriage. “Catherine is great,” he said. “She is doing wonderful, talked to her today [and] just got a lovely note from her . . . I’m very hopeful that we’re going to work things out . . . We’re just taking a break, a couple of issues, sometimes you got to do that.” Zeta-Jones has also been spotted wearing her wedding ring. Neither has filed for divorce.