The Kennedy-for-president campaign has asked some employes to forgo their paychecks to help a dwindling treasury and make more money available for advertising in New England.

Campaign budgeters, expecting a decline in contributions as a result of Sen. Edward M. Kennedy's (D-Mass.) resounding loss to President Carter in Monday's Iowa caucuses, are also debating whether a West Coast fund-raising trip scheduled for next week might cost more than it would take in.

And some Kennedy workers in Iowa have been told that they may not be paid for their work in the week preceding the caucuses.

Concern is growing among liberal Democrats, Kennedy's natural constituency, that he may wash out of the presidential campaign if he loses to Carter next month in the Maine caucuses and the New Hampshire primary.

Kennedy's money problems provide more evidence of topsy-turvy nature of political fortunes this year. A few months ago the Carter campaign warned staff members that paychecks might be delayed because of cash problems.

The Carter campaign was having trouble getting contributions, while at the same time contributors were putting up tens of thousands of dollars for draft-Kennedy movements.

The Carter camp was able to meet its payroll on time, however.

When Kennedy became a canddate in November, he put together a staff of about 200 paid workers. On campaign trips, he was regularly accompanied by a team that included a personal secretary, a political adviser, two speechwriters, two clerk-typists, three press aides, a hotel and travel coordinator, a doctor, a nurse, a photographer, two general-duty helpers and a sound-and-light crew of two.

In the future, campaign aides says, the traveling retinue will be sharply reduced. To take up the slack, some workers will be transferred from the Washington office to Kennedy's Manchester, N.H., and Boston campaign headquarters until the Feb. 26 New Hampshire primary.

Kennedy had scheduled stops in western states next week for fund-raising, including a big-ticket dinner in Seattle. But now, with doubt about how many people will turn out for those events and with new concern over the cost of a cross-country trip, Kennedy's advisers are considering canceling the tour.

Kennedy's strategy is to focus almost exclusively on his home region, New England, hoping that he can beat Carter there and then take in enough contributions to carry him through the next month or so of primaries.