After months of fretting, non-financial companies that use over-the-counter swaps should find out this week what regulators are proposing in terms of margin requirements, which are expected to affect at least some corporate end-users.

In fact, Tuesday will be jam-packed with margin-related events. At a Commodity Futures Trading Commission (CFTC) meeting at 9:30 ET Tuesday morning, the commission is set to vote on a proposal that is expected to exclude corporate end users from margin requirements.

At a meeting that begins half an hour later, the Federal Deposit Insurance Corp. (FDIC) will vote on a proposal to require banks it regulates to subject at least some corporate customers to collateral requirements on swaps trades. Other banking regulators, including the Federal Reserve, are expected to follow the FDIC's lead and issue similar proposals.