IQueryable<ListProject> SelectListProjects(IQueryable<Tickets> tickets)
{
    return entities.Tickets
        .Where(p => p.vonProjekt == id)
        .Where(p => p.phaseID == 0)
        .OrderBy(p => p.ueberschrift)
        .Select(p => new ListProject
        {
            Id = p.ID,
            Name = p.ueberschrift,
            AssignedEmployee = new ListEmployee
            {
                Id = p.AssignedEmployee.ID,
                Name = p.AssignedEmployee.name
            },
            WorkUnits = p.WorkUnits
                .Select(wu => new ListProjectWorkUnit
                {
                    Duration = wu.dauer,
                    PauseDuration = wu.pauseDauer,
                    Employee = new ListEmployee
                    {
                        Id = wu.AssignedEmployee.ID,
                        Name = wu.AssignedEmployee.name
                    }
                })
                .ToList()
            });
}

var project = SelectListProjects(entities.Tickets
        .Where(p => p.ID == id)).Single();