| Value | Category | 
                                    
                    
                        | 1 | working for someone else | 
                                    
                    
                        | 2 | employer or self-employed | 
                                    
                    
                        | 3 | not working and not absent | 
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.