Dear Earl,

Read 29 CFR 1904.5(b)(2) and (6). Paragraph (2) covers the exceptions. Exception (ii) may cover you.

Paragraph (6) covers injuries and illnesses during travel.

MikeCJ

I think that your key words here are "after hours".  If the employee was not "at work" at the time, then there would be no question in my mind that it is not work related.  In most cases, it is hard to prove that a heart attact is work related. 

If the employee is in travel status, not yet checked in at a hotel, then yes, it is recordable (see the Standard on Recordkeeping).

Rob