Illness
							                                
                                        
                                    
							                        
                    
                            Other work
							                                
                                        
                                    
							                        
                    
                            Weekly rest periods
							                                
                                        
                                    
							                        
                    
                            Who's driving
							                                
                                        
                                    
							                        
                     
	 
	