The Foreman is a older man who is very scared of what is going on with the job on the building site.  The Foreman is having to deal with 2 other workman and also the death of his one of his men.  He is scared that the  big boss finds out.   When playing this part of the Foreman, I would have him being very nervous and fidgeting a lot because he is so scared of being found out and looking around at the audience allot.  When the Foreman gives his orders to the men he shouts at them because he feels this is the only that his boss will think he is in control.  By playing the Foreman like I said it allows the audience to  see him as anxious and scared of being found out by his boss,