The development team working to transform Oakland's Coliseum complex into a sports and entertainment center appears to be waiting to the last minute to submit key documents that should provide more clarity as to whether the project might ever get built.

Monday is the deadline for Colony Capital and its partner, Hayah Holdings, to submit to the city a signed Letter of Interest from one of Oakland's three major league sports teams declaring its intent to join in the project.

Also due is a report describing funding sources for the initial phases of the multibillion-dollar project, a revenue analysis for new stadiums and site plans.

Oakland's point person on the project, Gregory Hunter, said Friday that the city hadn't received the documents, but that the development team had indicated it would meet the Monday deadline.

The Oakland Raiders, which are the only franchise at the Coliseum complex, that has expressed interest in Coliseum City, declined to comment Thursday when asked if it would issue the Letter of Interest. Colony Capital also declined to comment.

City officials have stressed that the project will not be easy to fund. There is already at least a $500 million shortfall on a new football stadium for the Raiders. The city is hoping that private investors would cover that gap by obtaining the rights to build homes, shops and a hotel on the publicly owned Coliseum property.

Last month, the development team released reports concluding that there would be sufficient demand for premium seating that could be used to help finance a Raiders stadium. A previous study by a different consultant found demand lacking and recommended that the Raiders build what would be the NFL's smallest stadium.

The development team's report also estimated that full build-out of Coliseum City, including development on both sides of Interstate 880, would cost about $340 million in infrastructure improvements. That would include about $24 million to expand the BART station $14 million for drainage improvements. Infrastructure costs for just a new NFL stadium were estimated at $55 million.

Program boosts Oakland businesses

The Centers for Disease Control and Prevention is launching a free program, Work@Health, in Oakland to give small-to medium-sized businesses training and up to $5,000 in seed money to start their own workplace wellness programs for employees. The program will teach employers how to reduce health care costs and increase productivity at work.

The CDC program will make up to $675,000 total available to area businesses. Oakland is only one of four city's nationally selected for the program.

To participate in Work@Health, Oakland businesses must sign up for a free one-day session Tuesday. Participants will learn to conduct an organizational health assessment to define needs, and receive professional training and technical assistance from coaches and experts. The Work@Health training takes place 8 a.m. to 5 p.m. Tuesday at the Waterfront Hotel at 10 Washington St. To sign up, visit www.surveygizmo.com/s3/1492491/WorkatHealthEmployerRegistration or email workathealth@ashlininc.com.

Hayward updating mobile home rules

The pending closure of Palto Alto's only mobile home park has prompted Hayward to tighten its own rules to protect tenants if one shuts down.

Hayward has nine mobile-home parks, and no owner has announced any plans to close or convert the parks. But park residents approached the city, saying its rules to compensate those forced to move fall short of Palo Alto's and other cities.

The City Council made it clear during a work session Tuesday that it favors better compensation for mobile home residents than is in the current ordinance.

"There are things we can do to make the ordinance much, much better," Mayor Michael Sweeney said.

The city attorney's office will return to the council in May with suggested revisions to the regulations.