List<string> statuses = new List<string>(){ "dead", "alive" };
var v = directory.Workers.AsEnumerable().Where(worker => worker.Name == "goga" && statuses.Contains(worker.Status.Name));

			MethodCallExpression expressionCall = Expression.Call(
				typeof(Enumerable),
				"Contains",
				new Type[] { typeof(string) },
				statuses.AsQueryable().Expression,
				expression// expression - это worker.Status.Name
			);